After a car accident, Yu Yue opens his eyes to discover that he has become a tiny three-centimeter sea fish. He has only one year left to live and sits at the very bottom of the ocean's food chain. Above him is the deep blue sea surface, and all around him lurk enormous beasts with razor-sharp teeth. At a critical moment, his God-Tier Evolution System awakens. By hunting and devouring other creatures, he can earn evolution points. From swallowing shrimp and eating coral to slaying the Black Dragon, he transforms from a helpless little fish into a deep-sea dragon and eventually takes human form to cultivate immortality. In this life, he relies neither on a powerful father nor on cheat-like advantages. He depends solely on his mouth as he survives the law of the jungle on the Continent of the Gods, devouring his way to the very summit!