When a raging storm forces her, Sam, and Gizmo to seek shelter, Elle struggles to hide her past from her friends and a too-friendly innkeeper.

It's a race against the clock as Sam, Elle, and Gizmo battle fearsome yet adorable monsters on their way to the Valley of Jade as long as Greene and the Gremlins don't catch up with them first!

With our heroes reunited, their bond is put to a final test as enemies from all sides converge.

Upon reaching San Francisco's Chinatown, our heroes discover its criminal underworld has been taken over by an old acquaintance.