After undergoing an experiment that gives them monstrous side effects, Abbi, Tilda and Juan join forces to find the scientist responsible — and a cure.

After an experimental gene therapy turns them into monsters, three twenty-somethings band together to hunt down the scientist responsible and force him to make them human again.

Senior year of high school takes center stage as Lara Jean returns from a family trip to Korea and considers her college plans — with and without Peter.