Ruby’s (former) BFF Penelope has everything Ruby lacks: a bestselling book, a doting fiancé, and a solid friend group. But Pen needs something that Ruby has in spades: time. Pen asks Ruby to help plan her upcoming wedding, and in exchange, offers to introduce Ruby to her literary agent, the jumpstart Ruby needs for her writing career.

Ruby must rely on the sunshine best man, Eitan, who seems to have everything figured out—except wedding planning. The more time they spend together, the more Ruby sees beneath his sunny bravado, and learns about a grief that mirrors her own. Eitan, meanwhile, sees the reality of her and Penelope’s friendship and begins asking questions that threaten the entire wedding—and the writing career that Ruby has hanging in the balance.

As the wedding, her feelings for Eitan, and her own dreams for a life post-cancer collide, Ruby must reckon with what she’s actually fighting for, and what it means to survive.