A few months after the Hachiko High's massacre and even fewer months after Hachiko's Communal School Day, the relation between dogs and cats has gotten someone better. You don't play as anyone with any sort of power, nor a murderer, nor someone exactly smart, you play as Rover trying to have fun on a Saturday. Maybe you'll make new friends, or tighten the bonds with your already existing friends, or you'll do something incredibly stupid and make everything worse, your choice.