When Kai flies from L.A. to Canada for a long-awaited in-person visit with online best friends from childhood, there's only one thing on his mind: Lily, the girl he's loved from afar since they were twelve. He's come prepared to spend the next three weeks showing Lily how he feels about her—and hopefully bring her back home with him. Lily never expected the sweet, nerdy boy from her childhood to grow into a tattooed, chiseled dream who sets her pulse racing the moment they meet. She thought this would simply be a fun visit with an online friend, but instead Kai's attention has sparked something within Lily that she cannot resist. As Kai turns on the charm and blurs the lines between friendship and something more, Lily must decide: can a summer fling with an expiration date turn into forever?