It's no secret Tav and Luca are going out. After the accident, it's also no secret that new kid Jack Collins has a raging case of homophobia, and is not best pleased about having given the kiss of life to a gay guy. Either Luca quits swimming, or Jack is going to make him.
Tav favours the tried-and-true method of knocking Jack's teeth down his neck, only he can't really afford another school suspension. Luca favours just ignoring him, only ignoring a penknife being held to your throat at New Year's Eve is downright stupid.
Thing is, Luca suspects Jack is a victim of something himself. And time is running out for Luca to get through to Jack, before Jack gets rid of him.