A new girl has moved to Muertown and Rosita does all she can to help her fit in. But sometimes fitting in his hard when you don't know where you belong and Rosita is going to make sure this new girl fits in whether she likes it or not.
The Muertoons clear out Gabi's storage space to make room for their new friend, Bibi. Gabi however, isn't quite ready to part with her collection of junk so their new friend can move in. It's up to the rest of the girls to show Gabi that friendship is more valuable than any amount of material possessions.
Lupita is distressed that their treehouse has become sick. All the Muertoons try to fix the tree in their own way, but things keep getting worse. Lupita thinks she knows what the root of the tree's problem is and it stems from the Muertoons themselves.
All the Muertoons except Rubi are glued to their TV watching the latest episode of their favorite telenovela, "Betty La Muerta". Rubi is bored and would much rather be playing Muertoball. To lure her friends away from the TV, Rubi decides she needs to create a telenovela of her own.
After Gabi reads the Muertoons a spooky story, everyone is chilled to the bone except Bibi. Bibi thinks scary stories are silly and says nothing can scare her. Though Bibi may discover that she is not be as brave as she thinks she is when a mysterious creature sneaks into their home.
Rosita feels a bit neglected after the Muertoons eagerly scarf down her latest batch of churros without so much as a "thank you". Tio Rico convinces Rosita that she'll get her just desserts if she lets him be the middle man between her churros and her hungry friends. But will getting in to business with the shady Tio Rico be biting off more than she can chew?