At a high school where the students are literally divided into predators and prey, friendships maintain the fragile peace. Who among them will become a Beastar--a hero destined to lead in a society naturally rife with mistrust?

Dwarf rabbit Haru has been abducted by Shishi-gumi, a gang of rogue lions infamous for torturing, murdering and devouring herbivores. The mayor offers to help, but can he be trusted when he himself is a lion? Meanwhile, Legoshi tracks Haru's scent, determined to rescue her at any cost, while Haru both defies her captors and tries to accept her fate. Elsewhere, red deer Louis is faced with a terrible temptation...