Violet’s usually bulletproof optimism is faltering. Crushed by the sudden death of her father and having to care for her rebellious teen sister, Phoebe, it’s a struggle to do much of anything other than survive each day and try not to feel like she’s the world’s worst sister.

But when Phoebe discovers a love letter written by the man who used to live in their apartment—a letter begging for its recipient to give him another chance—sheshows signs of life for the first time since their dad died. Determined to keep that spark alive, Violet tracks down the letter’s author, Dex, and the pair rope him into a cross-country trip to deliver it.

Dex is enigmatic and abrasive, but as the miles pass and he slowly opens up, Violet feels an unexpected pull toward him—and a growing fear of what happens when they finally reach his former great love.