With less than six months of high school left, overzealous artist Zeke Griffiths finds himself in a tough spot when his archenemy nominates him to be the chair for the senior prom.
To celebrate his acceptance to Stanford, Kiersten throws a party at his house, but an unexpected guest's arrival threatens to turn the night upside down.
In the season finale, PIHS's prom has finally arrived - along with the end of high school. But as the past collides with the present, Zeke, Maia, Kiersten, and Zoe are in a tricky spot when many relationships hang by a thread.