kim and Isabella return to the old power plant where Isabella ran from earlier and put up their dukes. Isabella instigates monkey fist by yelling 'quit hiding like a chimp and fight us like a man, monkey fist!' monkey fist agrees 'very well, both of you come at me.' (his ninja suit glowing an ominous red) his attacks seem faster and stronger than normal. they struggle to find out why until Isabella notices a D.E. inc logo on monkey fist's suit and realizes 'kim, my old enemy dr heinz doofenshmirtz must have upgraded his ninja suit to make him stronger than ever. They win by kim distracting monkey fist and Isabella kicking him in the head, and are about to rescue phineas Abigail and Rachel when shego shows up and lights her fists up. She then punches rachel with a special punch that puts toxin in her body. No worries, after they get back to Danville, Abigail is able to purge the toxin from her body with a sisterly hug and they take a break from adventures the end.