A Funny Thing Happened on the Way to the Forum is a 1966 farce musical comedy film, based on the stage musical of the same name. It was inspired by the farces of the ancient Roman playwright Plautus 251183 B.C. specifically Pseudolus, Miles Gloriosus and Mostellaria and tells the bawdy story of a slave named Pseudolus and his attempts to win his freedom by helping his young master woo the girl next door.
In the city of Rome during the reign of Emperor Nero, Pseudolus Zero Mostel is the lyingest, cheatingest, sloppiest slave in all of Rome, whose only wish is to buy his freedom from his masters parents, the henpecked Senex Michael Hordern and his dominating wife Domina Patricia Jessel. When he finds out that his master, Senexs handsome but dim son Hero Michael Crawford, has fallen in love with Philia Annette Andre, a beautiful virgin courtesan from the house of Marcus Lycus Phil Silvers, buyer and seller of beautiful women next door, Pseudolus makes a deal he will get the girl for Hero in return for his freedom. Unfortunately, the virgin has been sold to the great Roman soldier, Captain Miles Gloriosus Leon Greene, who even now is on his way from conquering Crete to claim her as his bride. Pseudolus blackmails his overseer, Hysterium Jack Gilford into masquerading as the corpse of Philia to fool the captain, but things go wrong at every turn.In the end, the boy gets the girl Senexs nextdoor neighbor Erronius Buster Keaton finds that Philia and Miles Gloriosus are in fact his longlost children and Pseudolus gets his freedom, a beautiful concubine to be his wife, and a dowry of 10,000 minae, compliments of Marcus Lycus. ........
Source: Wikipedia