Rigby is a writer. No, his books aren't known, but that doesn't mean he's a bad writer. It just means that he doesn't want anyone to see his work, which is quite personal. Well, when his friend Chad gets them a job at The Park, a company where all books are published and famous writers work, he didn't know it would come with unusual feelings about famous author Mordecai. The two quickly become close, but one mishap at a club could change that forever. The feelings are suddenly all over the place, but between Mordecai denying his feelings for Rigby, finding some slutty barbie girl, and leaving his daughter to think that she's going to get this horrible new mommy, nothing might turn out right. Unrequited love sucks ass.
(Everyone is human in this, and this summary sucks.)