After his retirement is interrupted by Gorr the God Butcher, a galactic killer who seeks the extinction of the gods, Thor Odinson enlists the help of King Valkyrie, Korg, and ex-girlfriend Jane Foster, who now wields Mjolnir as the Mighty Thor. Together they embark upon a harrowing cosmic adventure to uncover the mystery of the God Butcher’s vengeance and stop him before it’s too late.

An imaginary world comes to life in a holiday tale of an eccentric toymaker, his adventurous granddaughter, and a magical invention that has the power to change their lives forever.