Viv makes a distressing discovery. Devastating news about an old friend reignites Mia's rush to finish the list. But when is it time to stop running?

Mia's 17th birthday party ticks several boxes on the list, but there's no shortage of drama. Cam combats jealousy and indifference; Will runs his mouth.

In Mia's shadow, a frustrated Alex feels mounting pressure to be perfect. The Polancos meet for a family therapy session after a harrowing school day.

A shared suspicion brings Mia and Alison closer together and finds them on a spa day with Viv. As Becca confides in her mother, Will speaks his truth.

Daunted by crossing "sex" off her list, Mia opts for "breaking the law" instead. During a mansion rager, hard liquor and harder truths flow freely.

Fueled by newfound love, Mia tries to reinvent herself through drama club. Cam and Becca struggle to communicate; things at work get weird for Will.

Post-party gossip gives Mia flashbacks from the hospital. Between an invite from her crush and karaoke with the crew, it's time for a bigger bucket list.

Fresh out of treatment, Mia's ready to get back to her life — only to discover her friends have been drinking, partying and hooking up without her.