Sven and Henry visit Henry’s uncle Gustus in hopes of receiving residuals from their voice changing gum. This leads to a cross country confrontation with the most mysterious scientist of the century: Nikola Tesla! Featuring: Steve Nelson as Sven Ingaborg Andrew Tisher as Henry Mossmouth Bill Arnett as Gustus Mossmouth Griffen Eckstein as Nikola Tesla and Hitchhiker and Tim Joyce as Sgt. Mertz