Inspired by stories from the fantasy graphics magazine Heavy Metal, this five-part animated feature combines the talents of hundreds of artists and animators from 17 different countries. A glowing green orb called Loc-Nar that contains the sum total of all evil in the universe travels through space and time, spreading violence and discord in its wake. The stories that follow demonstrate Loc-Nar's malevolent presence throughout the universe. In New York in the year 2023, cabbie Harry Canyon picks up a fare who turns out to have Loc-Nar in her possession, and it turns out to be one trip he wishes that he had never made. In contemporary suburban America, a nerdy high school kid finds the orb in his backyard and is transported to a comic-book universe where he's a mighty warrior and famous spoiler of women. A robot created by an alien race falls in love with a secretary from Earth who was kidnapped by his masters, while she is at once fascinated and repelled by his sexual talents. And finally, Loc-Nar crashes into a mountain, and a world of fantasy and danger spontaneously appears in its wake, ruled by The Defender, a beautiful amazon who rides on a giant bird. The voice cast for Heavy Metal includes John Candy, Harold Ramis, Joe Flaherty, Eugene Levy, Richard Romanus, and John Vernon. The sound track features selections by Black Sabbath, Blue Oyster Cult, Nazareth, Cheap Trick, Devo, and Grand Funk Railroad.