Dorian, a male snake in a brutal clan, struggles against discrimination and limited resources as he tries to evolve and raise his bloodline rank through a mysterious system that grants evolution points by devouring strong beings. Despite the clan’s hostility—especially from female snakes who deny him food reserved for the upcoming Snake Mother test—Dorian insists he can grow stronger. The clan prepares for the harsh test where those below standard will be eliminated, trapping them with no chance to escape. In defiance of the prejudice, Dorian uses the system to gain points by devouring a demon beast, setting up a critical fight for survival.