When Kai learns that his roommate Kris will be staying with him while her parents are abroad, he thinks nothing of it. After all, they are best friends, and have been since they were kids. Sleepovers next door are hardly new.
But Kai doesn't immediately realize that he and Kris aren't kids anymore. They are both 18-year-old heterosexuals, neither of whom have ever been in a romantic relationship, and their feelings for each other are no longer as simple as they once were. This event may well push one of them to break up, changing their relationship forever.