Minding his own business, eating himself to death one night in front of the gogglebox, probably watching Gogglebox, Roy Fat's better half is kidnapped by the unsavoury Thindicate corporation. Rescuing her - preferably without handing over Roy's precious food duplicator invention - entails donning his Bananaman leotard disguise, sweeping through multiple divergently-themed platform stages, munching on everything in sight, whilst belly-bumping or burping into touch any enemies encountered.