Following a ceasefire between the Nice Side and the Mice Side, the Zooverse is enjoying a period of tranquility. However, the nefarious mouse, Boo Boo Squeal, is bent on breaking this peace agreement and reigniting conflict by any means necessary. Heroes from the Nice Side, Nuke and B-52, must rely on their own resources to combat Boo Boo’s vengeful followers and protect the Zooverse with all their might.