Rachel is a talented attorney at a top New York law firm, a generous and loyal friend and, unhappily, still single -- as her engaged best friend Darcy is constantly reminding her. But, after one drink too many at her 30th birthday party, perpetual good girl Rachel unexpectedly ends up in bed with the guy she's had a crush on since law school, Dex, who just happens to be Darcy's fiancé. When Rachel and Darcy's lifelong friendship collides with true love, it leads to unexpected complications and potentially explosive romantic revelations. Meanwhile, Ethan, who has been Rachel's constant confidante and sometimes conscience, has been harboring a secret of his own.