Apparently, the 'in' thing to do in New York is join a gang of psychopathic thugs who enjoy dispensing physical violence to innocent passers-by. Mickey can only make friends if he wipes out the hoods who make up a rival gang, The Disciples, and takes out its leader, the notorious Curl.
Iron man Mickey can deliver quite a smack in the mouth and when duffed-up enemies drop their weapons, he can pick them up to use himself. Er, and that is it, really.