The seniors are trying to prank everyone in school, but Jenna gets a shock when she overhears that Jake and Gabbie slept together in Mexico, forcing her to evaluate whether she should tell Matty. She continued her relationship with the marine, even though she can't get her former flame off her mind. Matty still feels the same about her, but can't shake what her mother said to him in Mexico and steers clear. Gabbie comes clean to him and he punches Jake and also realizes that Jenna knows.
Tamara realizes she doesn't want to be engaged and sets out to end it, but decides that she wants to get married and they set a date.
Sadie is shocked when her mother pops back up in her life, seeking forgiveness,but Sadie doesn't want to give her the time of day after they way she ditched her, but she decides to try give her a shot in the end.