As Hackensack reels from Chucky's relentless—but secret—reign of terror, the Mayor tries to allay fears by cluelessly arresting an innocent suspect. Meanwhile, the kids desperately try to figure out Chucky's mysterious endgame — before it's too late.

A year after seemingly defeating their nemesis Chucky, “3 Amigos" Jake, Devon, and Lexy begin receiving mysterious, threatening calls from an all-too-familiar-sounding enemy.