Detroit Rock City follows four high school boys who are die-hard KISS fans in spite of the overwhelming popularity of disco and the objections of the adults ("KISS stands for Knights In Satan's Service!") as they do everything they can think of to get seats to the concert in Detroit. One of the mothers burns their tickets and carts her son Jam (Sam Huntington) off to a Catholic boarding school that looks like it was dreamed up by Charles Addams. The other three have to figure out a way to spring him and to find four new tickets so they can see the show. This involves taking another mother's Volvo, feeding hallucinogenic mushroom pizza to a priest, entering a male stripper contest, foiling two separate robberies, stopping to have sex (one couple loses their virginity in a confessional), sneaking backstage, beating up some disco fans, getting beat up by various other people and by each other, and eventually making it into the sanctum sanctorum of the KISS live performance.