Friends do nice things for each other, right? That's what Polly Bowman tells herself when she agrees to be her friend Bailey's 'fake girlfriend' to help him keep a promise to his family. After all, Bailey has always supported her through difficult times - he even knows about her secret singing sessions at the local speakeasy bar. But maintaining a fake relationship isn't easy, and when Polly's meddling but well-meaning group of friends throw her and Bailey together as best man and maid-of-honour for an upcoming wedding, Polly soon realises she's going to have to confront a few long-kept secrets head on?