As Gizmo is torn from his home and captured by a miserable circus, sheltered ten-year-old Sam Wing's retired treasure-hunting grandpa introduces him to a whole new world of magic.

With Gizmo's newest batch on the loose, Sam is torn between his promise of keeping the Mogwai safe or returning to his normal life a choice that is complicated further by an alliance with street thief Elle.

All aboard. The trust between Sam, Elle, and Gizmo is tested by a hungry supernatural stranger on a train.

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.

Sam, Elle, and Gizmo's nerves are tested as they follow Grandpa's map through the scariest woods they've ever encountered where more than soul-sucking, undead bureaucrats lurk in the darkness.

Upon arriving at the vibrant and bizarre Spirit Market, Sam and Elle must convince Gizmo's maker that not all humans are bad an argument complicated by Riley Greene's hot pursuit.

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.

The friends celebrate their arrival at the Valley of Jade, but will Sam finally gain the confidence he desperately needs?

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