While working part-time as a babysitter, female student Arisa is picked on by some thugs from the Black Alliance. At that moment, a mysterious masked, naked warrior named Shameless Mask appears and knocks the thugs down with nunchucks and his famous high kicks. The children who are being held hostage are excited by the thugs' shameless bravery, causing trouble for Shameless Mask. At that moment, the thugs wake up and begin their revenge!
