When Soleil accidentally unleashes an ancient evil from a cursed graveyard, the spirit of Marie Laveau grants her and an unlikely group of kids powers from the Loa.

Reeling from their new powers, the kids seek answers from Pat's Aunt Alma, a voodoo mambo, who helps them contact the spirits. But the mysterious "ancient evil" they unleashed goes after Missy and influences her into targeting Soleil in a deadly pursuit.

After learning from Honey Lou that Pat’s dad had his soul trapped by the Feu Follet, the Krewe helps Pat free his dad and say one last goodbye. Belial and Mayor Furst visit the Necromancer to coerce him into altering rougarou Malcolm's final memory.

Furst uses a spell to lead the rougarous and vampires to their deaths. To free themselves and stop the war, the Krewe must convince Nelson that his dad's beliefs are wrong. Soleil must make a choice between good and evil.