From the back of the book:
Evil forces from all over the known galaxy and other dimensions threaten the Earth! But fear not because you have the tools, the talents and the giant Mecha to defend the Earth from all comers!
This revised version of Super Happy Sentai Hour is the first commercially produced roleplaying game built from the ground up for the Sentai Genre! In these pages you will find everything you need to build your own team of good looking friends from all walks of life, elite heroes or even teenagers with attitudes! this rulebook includes:
Complete character creation and mecha creation rules
New expanded mecha rules to better customize your fighting machines
Complete rules for building villains, villain groups and monsters (including over 100 monster templates!)
Tons of advice and options to build your own sentai series from the ground up!
So What are you waiting for? The Earth is in desperate need of saving and you didn’t don that bright red unitard just to try to pick up girls, now did you!