Deadbeat college student Amamiya Yuuhi wakes up one morning to find a talking lizard on his bed. It proclaims that his destiny is to join up with the other Beast Knights and protect the Princess (who turns out to also be his next door neighbor, Asahina Samidare), lest the gigantic Biscuit Hammer fall and smash the entire planet. Though indifferent over the fate of the world, Yuuhi swears to follow Samidare after she declares that the Biscuit Hammer won’t destroy Earth; she will.