After receiving an exotic small animal as a Christmas gift, a young man inadvertently breaks three important rules concerning his new pet, which unleashes a horde of malevolently mischievous creatures on a small town.

Set in 1920s Shanghai, ten-year-old Sam and 12-year-old Elle return the Mogwai Gizmo back home to the lush and perilous Valley of Jade.

Young sweethearts Billy and Kate move to the Big Apple, land jobs in a high-tech office park and soon reunite with the friendly and lovable Gizmo. But a series of accidents creates a whole new generation of Gremlins. The situation worsens when the devilish green creatures invade a top-secret laboratory and develop genetically altered powers, making them even harder to destroy!