Oliver Cromwell Oglivie (also known as "O.C.") and Mark Stiggs are two ne'er-do-well, middle-class
Phoenix, Arizona high school students. Disgusted with what they see as an omnipresent culture of vulgar and vapid suburban consumerism, they spend their days slacking off and committing pranks and outright crimes victimizing their nemeses, the Schwab family. The patriarch of the Schwab family, Randall Schwab, is a wealthy regional insurance salesman responsible for the involuntary commitment of O.C.'s grandfather into a group home. An extreme social conservative, Randall is blinded by greed, ideology, and plain stupidity to his wife Elinore's chronic
alcoholism, his daughter Lenore's complicated relationship with business associate Frankie Tang, and the stunted emotional maturation of his son Randall Jr. The majority of the film is presented as a
frame story, narrated by O.C. and Stiggs to President of
Gabon Omar Bongo. In it, they loosely retell the story of their ultimate revenge against the Schwab clan, which they had to accomplish before the summer's end forced O.C.'s grandfather to relinquish custody of O.C. to out-of-state relatives. O.C. and Stiggs' first major plan is to ruin Lenore and Frankie's wedding. They acquire an
Uzi from deranged
Vietnam veteran Sponson and modify a barely-functioning
Studebaker Champion into an irregular,
hydraulically-suspended car they call the "Gila Monster". Crashing the wedding, they convince Randall Jr. to fire the gun wildly into the wedding presents, cake, and a chandelier. O.C. strikes up a romantic friendship with fellow high school student Michelle. O.C. and Stiggs' next plot involves the participation of African pop band
King Sunny Adé and His African Beats; the two, along with their friend Barney, raft and walk their way to a Mexican fiesta, where they hire Adé (and also find the time to terrorize their drama teacher Garth for his homosexuality). Exhausted by his relentless commitment to juvenile pranks and stunts, Michelle stops seeing O.C. Later, O.C. and Stiggs connect with women's clothing magnate Pat Colletti, to whom they give marketing advice for his latest slumping fashion line. After finding their friend and drinking buddy Wino Bob (who had participated in other pranks targeting the Schwabs) dead, the two resolve to avenge the Schwabs' supposed abuse of the man. They sabotage a
kitschy
dinner theater performance (directed by Garth) which the Schwabs are attending by substituting Adé's band for the performers. The Schwabs convulse in horror at the unfamiliar music, which is otherwise warmly received. O.C. and Stiggs finally launch their master plan of revenge against the Schwabs. They infiltrate the Schwab family home while the Schwabs are away and turn it into a homeless shelter. In the process, they also discover an elaborate doomsday bunker under the house, filled with guns, fireworks, and videotapes featuring the political messages of ultraconservative politician Hal Phillip Walker. When the Schwabs return, chaos breaks out as O.C. and Stiggs engage in an underground gunfight with Randall. They are saved by Sponson, who rescues them by helicopter, grabbing Randall and dropping him in a lake in the process. O.C. is happily reunited with Michelle, and the two retire to her bedroom. At the end of the summer, Colletti informs O.C. and Stiggs that his fashion line has become wildly successful and pays them the first in a series of large royalty checks, which the two use to hire a 24-hour nurse for O.C.'s grandfather (allowing O.C. to remain in Phoenix). O.C. and Stiggs drive the Gila Monster triumphantly through the streets of suburban Phoenix. ==Cast==