 Federico, Bruno, Pirro and Benny are married. The first three have beautiful wifes, Benny instead is married to a ugly woman. Ornella is Bruno s wife, she is very jealous and maintains that all men are deceitful, granted the opportunity, while Claudine, Federico s wife, maintains the contrary point of view. So they bet that Tosca, a former dancer, will succeed in seducing Federico. Troubles for everyone.