The film is focused on four good-for-nothing conmen, Sunny (Akshay Kumar), Max (John Abraham), Jai (Shreyas Talpade) and Jwala (Ritesh Deshmukh). The four cannot stand each other. Sunny and Jwala are in one team, whilst the other remainings Max and Jai are together. As the two teams are in a battle against each other, the four get married to suave hot ladies, Sunny marries Henna (Asin), Max marries Bobby (Jacqueline Fernandez), Jai marries Parul (Shazahn Padamsee) and Jwala marries drama-queen JLo (Zarine Khan). The four think they can finally live a happy life, however sorrow isn't far behind, the four couples are invited to their father-in-laws house, and it turns out that the four couples have to live in JLo's father JD's mansion. Each father thinks he has the richest son-in-law, each wife thinks she has the richest husband, when each son-in-law is pretending to be the richest. As they enter the house, a catch title "Jolly" is attached to their name, and with a trumble of confusion, the four father-in-laws begin to think all four son-in-laws are named Jolly. The confusion gets higher, each father is confused who their son-in-law is due to the name Jolly. JD thinks he gets it correct, Sunny is called Jolly but marries Bobby in mistake, Max is called Jolly but marries Henna in mistake, and as the confusion continues, the film turns into one hilarious joy ride!