Mika and Chapa are determined to prove to Miles, Bose, and Ray that the new kid in school, Buddy Fudgers, is actually Lil' Dynomite, before he successfully completes his plan to get revenge on his nemesis, Captain Man.

In an effort to help Mika defeat her rival in a riff-off, Miles sells his soul to a suave demon living in The Man's Nest Abyss Room. Captain Man must soon face the demon in a Ukulele-Log-Rolling competition in order to get all the kids' souls back.