It is also a love story, an etiquette manual for talking apes, parenting help for said primates, and a demented “how-to” guide for the aspiring evil scientist.
You’ll notice I used the words “evil scientist”, not “mad scientist”, because really, you can’t explain anything to mad scientists. They spend most of their time frothing at the mouth or terrorizing the village after drinking/injecting/inserting/stepping into/ or otherwise using the newly minted insane formula/device they have created to solve the problem of “what should I do this afternoon after I’ve finished eating bugs?”
Evil scientists, on the other hand, have a plan.
So it is with Dr. Harold Cogitomni, who is hatching a diabolical (evil) plan, to turn a Spider Monkey (Gigi), into a 60-foot, poison-breathing (to be clear, breath that is poisonous to others), crystal-spike-tailed behemoth capable of crushing houses and tanks. (Always a useful ability in a behemoth, or even your run-of-the-mill leviathan.)