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.

Soleil and Stanley learn there’s more to each other than they thought as they try to save Stanley’s sister, Cece, from rougarou Missy. Pat and Maybe search for offerings to summon Ogoun when creepy voices that only Pat can hear call out to them for help.

When the Krewe realizes Belial feeds off fear, they watch over the Friday the 13th parade. Soleil realizes they need to work together to defeat The grunches! Missy learns to control her transformation. Maybe finds out the Bunradys are vampires.

The Krewe has an opportunity to sneak into Furst Mansion, but their cover is almost blown. Meanwhile, Nelson's starting to get suspicious about Missy and Stanley's powers, and his dad makes it worse by advising Nelson not to trust them.

The Krewe gets caught and everything is going according to Furst and Belial's plan. After facing Belial, Soleil experiences true horror and her spirit is broken. We learn what drove Mayor Furst to the dark side.

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.