Luke (Jack Johnson Jake M. Johnson) and Kate (Olivia Wilde Olivia Wilde) are good friends. They work in the same brewery and can be called bosom friends. At the same time, Luke has a girlfriend Jill (Anna Kendrick Anna Kendrick) who has been in love for many years, while Kate also has a boyfriend Chris (Ron Riveston Ron Livingston). After the four met, they often went on a double date. Soon, Chris broke up, Kate began a dissolute life, Luke can not bear to see Kate increasingly depressed, but just a friend, what can he do?