6 years after Weirdmaggedon. Wendy has is getting married to Lee. The whole gang are back together for the ceremony, and a wedding is hardly the place to stop romance.

Wirt AKA The Lantern Bearer becomes less human everyday. Soon it will be just the Beast. All he wants is to keep the lantern lit, to protect the brother he never could. But when strange things start happening and new villains arise, Wirt needs help from some reluctant allies.