Sex, secrets and shenanigans occur at Ally's rental beach house in Rosarito, Mexico.

Some senior pranks manage to cause chaos. Jenna's vow to not think about Matty ends up being tested after she overhears a worrying secret.

Senior Yearbooks are out. Jenna's depressed to see her senior superlative, but what will Matty say in her yearbook?

Jenna's forced to throw Tamara a party to celebrate her fake engagement. Meanwhile, Gabby reveals a secret about Matty that sends Jenna in search of the truth.

Tamara accuses Jenna of sabotaging relationships, so Jenna confronts her ex-boyfriends to find answers.

Jenna refuses to let a series of obstacles ruin her chance at having a dream prom.

The prom takes unexpected turns.

A fight with Luke pushes Jenna to sign up for her camp reunion – and towards reconnecting with Matty.