In Chicago, Kate is the PR of a brewery. Her boyfriend is Chris and her best friend is her coworker Luke, who lives with his girlfriend Jill. When Chris invites Luke and Jill to spend the weekend at his house by the lake, he gets closer to Jill while Kate spends most of the time with Luke. When they return to the city, Chris breaks up with Kate. She becomes upset and decides to celebrate with her coworkers in a bar; then she has one night stand with her colleague Dave. When Luke learns what happened in the previous night, he becomes kind of jealous. Will their relationship be affected?