In an antique store, a neurotic named Stanley Ipkiss goes to buy a gift for his girlfriend Kathy. In the store he finds a pot with a mask that begins to talk to him. When Stanley puts it on, he transforms into a super powerful being with an abnormally large, bald, green-skinned head and a mouth full of large teeth. After exploring his new abilities, Ipkiss becomes enraged, takes revenge on those he has a grudge against, and earns the nickname Big Head.
