When Liz Ortecho reluctantly returns to her tourist-trap hometown of Roswell, New Mexico, she reconnects with Max Evans, her teenage crush, who is now a Roswell police officer. But Liz soon discovers a shocking truth: Max is an alien who has kept his unearthly abilities hidden his entire life, along with those of his otherworldly sister, Isobel, and their friend Michael. Elsewhere, Master Sergeant Jesse Manes spearheads a long-standing government conspiracy — unbeknownst to his son, Alex Manes, who has recently returned from service overseas with emotional and physical injuries. The politics of fear and hatred that run rampant in Roswell threaten to expose Max and his family and could endanger his deepening romance with Liz…as well as their lives.
The anniversary of Rosa's death reignites tensions as the town takes aim at Liz and her father, Arturo, for what happened on that fateful day 10 years ago. Meanwhile, Max confronts Michael and Isobel, who are concerned that his feelings for Liz will expose their secret. Elsewhere, Master Sergeant Manes' attempt to convince Kyle of the alien conspiracy in Roswell takes an unexpected turn. Finally, Liz and Kyle make a shocking revelation about Rosa's death.
After uncovering some unsettling information about Max, Liz runs a series of tests to see what his powers may be capable of. Michael and Isobel take matters into their own hands after learning that Liz may be getting too close to Max. Liz enlists Maria's help as she goes on a scavenger hunt across Roswell to uncover more about Rosa's final days.
Fearing that his identity will be uncovered, Max is conflicted when a town-wide power outage leaves patients at the hospital in need of help. Meanwhile, Liz turns to Kyle after learning details about the night Rosa died. Elsewhere, Isobel and Michael come up with a plan to deal with Liz, and Master Sargent Manes seeks help from an unlikely source.
Max and Michael begin to worry about Isobel after a series of mysterious blackouts cause her to spiral. Liz turns to Grant Green for help when she learns that he may have witnessed something strange on the night Rosa died. Meanwhile, Kyle and Alex uncover a secret that Kyle's father had been keeping from everyone.
Secrets are uncovered about Rosa’s final day, Isobel’s mysterious blackouts and Alex and Michael’s relationship in high school.
After uncovering a devastating secret about Rosa's death, Liz takes matters into her own hands to protect herself and those around her. However, her plans are sidelined after a day with Mimi, Maria and Alex leads to a new revelation about Rosa. Elsewhere, Max takes aim at Wyatt, while Cameron decides whether she's going to help Sergeant Manes.
With Isobel's life hanging in the balance, Liz and Michael frantically search for a way to help her. Max turns to his mom Ann about the origins of the alien symbol. Finally, Alex turns the tables on Sergeant Manes.
Max and Michael travel to Texas to visit a faith healer, who may be able to shed some light on the alien symbol Max has been researching. Meanwhile, Maria and Liz pay a visit to the same faith healer in hopes of finding a cure for Maria's ailing mother. Elsewhere, Alex and Kyle look into what Sergeant Manes may be hiding.
Frustrated by her inability to remember what happened the night Rosa died, Isobel turns to Liz for help regaining her memories. Elsewhere, Max and Cameron investigate a series of strange deaths in the town, while Sheriff Valenti reveals information to Kyle about his father.
As the town prepares for the UFO Emporium Re-opening Gala, Liz and the team find themselves on a collision course with an unlikely enemy.
When a major revelation comes to light, Max, Michael and Isobel clash over how to deal with the fallout. Elsewhere, Alex uncovers a secret about Project Shepard and enlists Kyle and Michael's help looking into it.
Max and Michael find themselves at an impasse over how to deal with the 4th alien. Liz has a dangerous encounter with an unexpected visitor. Kyle spirals after uncovering a dark secret about his father’s death. Michael is forced to make a difficult decision about his future.
Torn between the heartache of Max's sacrifice and the joy of Rosa's resurrection, Liz suppresses her grief to focus on moving out of Roswell with Rosa. Meanwhile, Michael copes with Max's death in his own self-destructive way, while Isobel focuses her attention on honing her alien powers. Finally, Liz makes an alarming discovery after Rosa begins experiencing mysterious side effects from her resurrection.
Liz is forced to put her latest experiment on hold after Rosa begins to struggle with her new life in Roswell. Reluctant to face the truth about his mother's past, Michael turns his attention to helping Maria, who is dealing with her own family crisis. Elsewhere, Isobel agrees to join her mother for a day of spiritual healing to keep herself distracted. Finally, Rosa turns to Kyle to learn the truth about what really happened the night she died.
Determined to regain control of her life in the aftermath of Noah's death, Isobel makes a risky choice despite its potential consequences. Meanwhile, Alex and Michael work together to unravel the mystery surrounding the night Nora's spaceship crashed in 1947. Elsewhere, Liz makes a surprising confession when Cameron shows up looking for answers about Max.
On the verge of a breakthrough in her quest to save Max, Liz turns to Kyle for one last favor that could potentially land him in hot water. Meanwhile, Michael and Alex's investigation into Nora leads them to a farm, where they meet a historian named Forrest. Elsewhere, Cameron confronts Jesse Manes about her sister's whereabouts, and Isobel uses her powers for good.
The discovery of some complications with Max's pod forces Liz, Michael and Isobel to confront the possibility that they may not be able to save him. Elsewhere, Maria and Alex make amends.
Maria's investigation into her mother's disappearance leads her and Alex to the home of a mysterious boot maker named Travis. Meanwhile, on her journey of self-discovery, Isobel's night out leads her into the arms of someone unexpected. Finally, after making some major scientific strides, Liz is dealt a devastating blow.
Liz is forced to revisit a painful part of her past when her mother Helena shows up at the diner unexpectedly. Michael urges Maria to seek help after she experiences a strange vision, and Kyle's attempt to get Steph to open up doesn't go as planned. Finally, Helena's arrival in Roswell sends Rosa spiraling.
Despite promising Liz that he'll take things easy with his new heart, Max sets out to find Cameron after learning that she's gone missing. Michael grows concerned about Maria after a surprising discovery about her family history leaves her vulnerable. Elsewhere, ready to move on, Alex goes on a date with Forrest, and Rosa makes a decision about her future.
After uncovering a surprising connection to their past, Michael and Isobel learn the painful truth about the night Tripp attacked their mothers. Meanwhile, Alex confronts his father about their troubled family history. Elsewhere, Kyle's first date with Steph takes an awkward turn after Liz inadvertently becomes a third wheel.
After uncovering a cryptic message from the past, Alex, Isobel, Max, Michael and Maria set out in search of answers at the reservation where Alex's mother grew up. Meanwhile, Cameron encourages Liz to reach out to someone from her past after Auturo gets detained.
Driven by the prospects of her scientific research, Liz opens up to Diego about all the good her findings could do. Meanwhile, Max enlists Kyle's help getting to the bottom of the recent abductions, while Michael does his own investigating into Alex's disappearance. Elsewhere, after learning more about her mother Louise, Isobel pays a visit to Rosa, in hopes that Rosa could help her begin to heal.
As the town prepares for CrashCon, Liz and Max attempt to piece together who may be behind a potentially deadly plan targeting the festival. Elsewhere, Maria and Isobel take drastic measure to learn more about the night Mimi disappeared, while Michael is forced to do someone else's bidding.
Having realized that a deadly threat has infiltrated CrashCon, the busiest event of the year, Liz realizes that she can't save everyone she loves -- and with Max facing immediate danger, she and Isobel must make a heart-wrenching choice. Meanwhile, Michael finds himself caught up in the conflict between Jesse and Alex once again, even as Maria's life hangs in the balance elsewhere, and Kyle faces a moral dilemma when the enemy requires medical attention.
While Liz settles into her new life and career in Los Angeles, Max, Isobel and Michael must figure out if the stranger in the cave with the familiar face is friend or foe.
Jones fills Michael and Isobel in on bits from the past as they look for a way to save Max’s life. Meanwhile, Maria goes to extremes to try and stop a murder. And in order to move forward in her research, Liz will have to face her past.
Liz confronts Max. Maria is desperate to figure out the mystery of her vision and Isobel is learning more about her abilities. Meanwhile, Kyle has a strange encounter and Michael is fueled by his anger.
Isobel and Maria take a trip together to look for answers. Kyle receives a message from his past and Michael makes a disturbing discovery.
Liz makes the choice to lie to Heath. Maria and Rosa stand up to Jordan. Meanwhile, Isobel does some digging into Jones.
Max investigates the break-in. Meanwhile, Alex continues his research, and Rosa and Isobel team up and Liz makes a shocking discovery.
Liz's plan does not go as expected, putting herself, Isobel and Michael in danger. Meanwhile, Eduardo confides in Alex.
Liz needs Rosa's help. Maria learns what Jones wants from her. Meanwhile, Michael and Alex team up to help save Max.
Liz and Max continue to search for a way to stop Jones. Michael is worried about Alex and elsewhere, Isobel finds a big piece of the puzzle.
Liz and Max race to find Heath in the hopes that he can help find a way to get Jones out of Max's body. Meanwhile, Michael and Isobel try to get through to Dallas.
A desperate Liz agrees to a deal. Meanwhile, Rosa helps Isobel make a big discovery and the fight to save Max begins.
Isobel helps Kyle save a life. Jones needs something from Michael. Liz and Heath continue to work on the science in the hopes of stopping Jones. Everyone is working together to try and defeat the dictator, but will they all make it out alive?
The ultimate showdown with Jones is finally here and Liz must trust herself if she is going to the save the man she loves.
With the threat of Jones behind them, in a peaceful Roswell we find Liz is busy teaching while Max lends an assist to his ex-partner on a string of recent bank robberies. Our couples are happy and thriving but a sudden storm, leaves everyone on edge about what is to come.
A visitor connected to Liz’s past comes bearing gifts. Anatsa digs in on a story about the bank heists, angering Max and putting Kyle and Isobel in a difficult position.
Liz, Max, Michael and Cameron put a plan into action that could finally get them a step closer to catching Bonnie and Clyde. Meanwhile, Maria is hiding her recent lack of visions and Kyle has a date.
Liz’s work to find out more about a found skin sample hits a roadblock. Meanwhile, Michael continues to gain Bonnie’s trust, but Clyde may not be as easily persuaded. Also, Isobel finally finds the courage to be honest with Anatsa and Maria suffers a devastating loss.
Max’s secrets may have a devastating outcome for Liz. Meanwhile, Maria helps Dallas in his search for answers and Michael makes an unsettling discovery about himself.
Liz turns to Shivani for help finding scientific answers while Bonnie looks to Max for protection. Meanwhile, Kyle and Isobel deal with the fallout of their actions.
Liz and Max have a major disagreement prompting her to turn to Rosa for guidance. Meanwhile, Maria struggles to connect to her mother's spirit.
With missing friends and mysteries abound, Liz returns to fringe science, but in working alongside her new mentor, she's confronted with an unsettling revelation and a difficult choice, meanwhile, Maria uncovers the truth behind the "messages" she's been receiving. Elsewhere, the bond between brothers is tested when Max keeps an explosive secret from Michael, putting them at odds during a critical moment. Lastly, Isobel tries to pull answers out of Tezca, only to discover that the villain in her story is not as clear-cut as she may seem.
After being exposed to her own "alien-power mist," Liz finds herself trapped in a fever dream and a battle to save not just her own life but Max's life as well. Meanwhile, Michael stumbles on a secret Rosa is keeping involving a surprising former adversary.
Max and Rosa begin to uncover what Liz has been hiding, leading her to make a rash decision. Meanwhile, Michael and Maria struggle as their trail to locating their missing friends runs cold.
As Liz begins to see the error of her ways, she is quickly faced with a new threat which forces her to make a difficult decision. Meanwhile, Max finds himself in an intense standoff and Michael begins to lose hope of ever reuniting with Alex.
Liz is faced with an impossible decision. Meanwhile, Max agrees to join Isobel on a mission to save Bonnie.
Liz doubting her abilities, calls for reinforcements. Meanwhile, Isobel shows Max a memory, one that will put him on a new trajectory and Michael makes a promise to Alex.
