Tang Mo, an ordinary college student, was accidentally parasitized by the ancient alien beast "Sky Devouring Beast" during the beast tide incident in Hong Kong City, and gained the ability to devour and evolve. But he discovered that each evolution would eat up a piece of his memory, making him gradually lose his humanity. The dark forces of the Hong Kong City underground forces "Hongxing Society" and the "East Star Gang" are eyeing him, and the mysterious organization "Beast King Palace" is secretly planning to train him into a killing machine. Tang Mo was forced to deal with the three forces of the campus, Jianghu, and the military. While using the power of strange beasts to fight against powerful enemies, he was searching for himself in the fragments of memory. He gradually discovered that behind the beast tide in Hong Kong City was a conspiracy to resurrect the ancient beast "Hydra King", and the Sky-Eating Beast in his body was the only one who could restrain it. When the enemy uses his past, his relatives and friends, and his loneliness to attack him, Tang Mo must make a choice: become the true beast king, or protect the last bit of humanity? Every evolution is a life and death decision; every time you become stronger, you have to pay a heavy price. The port city is in turmoil again, and the war between alien beasts and humans has just begun.
