Single dad and bookshop owner Dave Swan is ready to attend his first parent-teacher night with his twins, Maple and Willow. Maple is super-excited to introduce him to her new best friend Ellie. Everything is fine until he meets Ellie's dad, who just happens to be the guy he had a wild fling with on a summer singles cruise.

Stained glass artist Daniel Eramos loves his life. He has a great job, an eclectic house, and the best daughter ever. But he's pretty shocked when Ellie introduces him to Maple, and to Maple's dad, who rocked his world not so long ago.

When the two men discover they have more in common than a crazy vacation, and that their kids are becoming besties, they know they've got something good going on. But when they have to negotiate living arrangements, adult time, and Dave's ex, it might overwhelm them before they can ever figure out what they want from each other.