Synopsis

Among the three eggs of the Mother Beast, the last Alpha to hatch is nothing but a green slime with no fangs or claws. It is publicly denounced as a mistake and thrown into the Bone Pit of Ten Thousand Beasts. But it evolves by devouring prey—from venomous lizards to poison bears, growing stronger with every kill. In the pit, it meets a proud little dragon, Istia, who wins over her ‘Slime Brother’ with roasted meat and rubies. When the second prince steals a treasure and pushes his third sister into a poisonous pool, the Alpha dives in to save her, only to be swallowed by a giant turtle. But he fights back from within, breaks out, and evolves. The abandoned reject is now on a path of revenge against the royal family—while guarding the one bond that still matters.