Told through found footage, the informal 10-year reunion of a reality TV show brings an old gang of friends together. After a drunken night out, the newly-single Anna has to confess that she made out with party girl Belinda’s exboyfriend. Belinda forgives her instantly, breaking the ice by admitting that she had a long, sordid affair with Anna’s husband. While remaining friends on the surface, the two begin a series of practical jokes that escalates to the point of no return. As the group of friends struggle for unity, secrets are revealed, trust is betrayed, allergies are exploited, sex turns deviant and as the pranks become more surreal, savage and sadistic, the two friends spiral towards mutual destruction.