A small zoo, at the outskirts of Sendai in north-eastern Japan is facing the imminent demise, about to be absorbed by the I-1 Park. The curator Tange orders zookeeper Matsuda to scout for new animals, after even their last animal, an elephant, died.
Matsuda advertises: "Become an idol! Comes with three meals and a nap."
And so seven girls in animal costumes decide to help…