Nick Cassavetes' comedy The Other Woman concerns venture capitalist Mark (Nikolaj Coster-Waldau), a lying, conniving sociopath. His wife, Kate (Leslie Mann), and his mistress, Carly (Cameron Diaz), discover this about him when Carly - who had no idea her boyfriend was married -- tries to surprise Mark at their home. The two polar opposite personalities - Kate is a little ditzy and very insecure where Carly is a confident, high-powered lawyer -begin to talk and bond. Eventually Kate decides she wants revenge, so she and Carly cook up a plan to ruin Mark's life. They find allies in Kate's brother Phil (Taylor Kinney) and unexpectedly in yet another one of Mark's mistresses, Amber (swimsuit model Kate Upton). ~ Perry Seibert, Rovi
After discovering her boyfriend is married, Carly soon meets the wife he's been cheating on. And when yet another affair is discovered, all three women team up to plot mutual revenge on the three-timing SOB.