The plot of the film follows two threads that will eventually converge. In one, a 13-year-old Black girl named Kat who was left orphaned in a car accident years earlier is compelled by fate to go back to her birthplace of Rust Bank. Kat, who has become hardened by her stint in the foster care and juvenile justice systems, is granted a second opportunity by a stuffy Catholic private school that needs the money she brings in. When she arrives, she discovers Rust Bank on the verge of being acquired by the evil Klax Korp. The other is set in the underworld, where the titular Wendell and Wild are two demons of questionable intelligence who have run afoul of their all-powerful father, Buffalo Belzer.