Because he found a new job, Simon Callum (Jason Bateman) brought his wife Robin (Rebecca Hall), who worked in painting design, to live in California. Simon's career has achieved some success, the couple is harmonious and their life is carefree. While shopping, Simon accidentally met his high school classmate Gordo (Joel Edgerton), and the two waved goodbye after a brief conversation. A few days later, Gordo brought a small gift to the couple uninvited. The three of them had dinner that night, but Simon didn't feel very happy. Obviously, he didn't like this always so weird classmate. On the contrary, Robin appreciated this enthusiastic man. After a small setback, Simon finally decided to open his mouth and break up with Gordo, who didn't belong to the same world at all. Gordo looked lost, and at the same time a strange expression appeared on his face...