Isabella eventually finds Kim possible and tells her 'Kim, I need you help. My husband phineas and my two daughters Abigail and Rachel are being held prisoner and drained by some chimp in a ninja suit.' Kim decides 'ok let's work together to thwart monkey fist.' 'do you remember where you escaped from? because i heard from wayde he captured all 4 of you.' Isabella remembers 'it was some old building with pipes and vats outside.'
Kim realizes 'of course the abandoned Middleton power plant.' the final battle begins in part 3