When serial killer Charles Lee Ray is mortally wounded in a police shoot-out, he uses a voodoo spell to transfer his soul into Chucky, a "Good Guys" doll. Young Andy receives the doll as a birthday gift and Chucky soon resumes his killing spree and makes sure that the evidence points to Alex. The detective who shot the serial killer doesn't believe Alex's story but, as he is attracted to Alex's mom, agrees to investigate. And Chucky doesn't like that at all...