The protagonist, Akai Red, is one of the heroes of a team that fought and defeated evil. However, he currently has no steady job and spends his days aimlessly, calling it "waiting time" in a park. ...That's right! He is a former Ranger and former Red!
Appearing before him are the fancy animal monsters, the "Shinshi." These monsters also seem to have some kind of "issue." Come on, get to work!! Former Rangers!!