Three friends leave Milan by car heading south. Two of them are married to two sisters, the third one is going to marry the third sister. The marriage is going to take place in the villa of their vulgar but very rich father in law. They are also bringing him a work of modern art: a wooden leg worth millions even if it doesn't look like it. During the journey everything happens: the future groom falls in love with another woman, the leg is lost to a team of Moroccoian football players and then given back and a dog, belonging to the old man, is lost. The father in law gets angrier and angrier and when they get in front of the villa, he is waiting for them with a shotgun in his hands...