The world has never seen such skilled adventurers: the nimble pickpocket Mr Wolf, the skilled safecracker Mr Serpent, the cold-blooded master of disguise Mr Shark, the flashy and muscular Mr Piranha, and the witty top-class hacker Miss Tarantula. However, even the cleverest criminals sometimes make mistakes. To escape imminent prison, gang leader Mr Wolf is forced to go to extreme measures: the Bad Boys must change for the better. Or pretend to? But when a new villain threatens the town, will Mr Wolf be able to convince the others to really become... good guys?