In the series premiere, Briana decides to take legal action against her ex-boyfriend, Devoin, after he continues to neglect his parenting duties and spread lies about Briana via Twitter. Katie and Joey get into an argument after Joey gets Katie's car into an accident then fails to inform her about it. Alex's ex-boyfriend, Matt, returns from rehab and Alex slowly introduces him into the role of being a father. Mackenzie and Josh celebrate their two year anniversary by arguing.
After reading what Devoin posted on Twitter, Briana decides to go to the court house and files an order of protection. Mackenzie feels that Josh should move in with her in order to strengthen their bond and for Josh to take more responsibilities as a parent. Alex still has a hard time trusting Matt, and feels that he is still trying to get high. Joey proposes to Katie.
Dr. Drew reveals Katie, Briana, Mackenzie and Alex's unseen moments that didn't air this season.