The Stupids is a 1996 BritishCanadianAmerican adventure comedy film directed by John Landis. The film is based on The Stupids, characters from a series of books written by Harry Allard and illustrated by James Marshall.
Joan and Stanley Stupid are convinced they are victims of a conspiracy that steals their garbage every week and in an attempt to uncover this, Stanley follows the garbage truck to the city dump where he stumbles across Lieutenant Neidermeyer who is selling contraband weaponry to a group of terrorists. Neidermeyer believes Stanley to be a secret agent who has uncovered their operation and orders him to be assassinated, and after several attempts on his life result in humorous dispatching of his would be assassins, Stanley narrowly escapes a carbomb and is presumed dead by Neidermeyer.Meanwhile, the children, Buster and Petunia Stupid, believe their parents have been kidnapped by a Chinese restaurant and go in search of them. They reunite with their mother Joan, who explains her theory that the police have turned against them and are responsible for their missing father. ........
Source: Wikipedia