Ten years ago, the malicious Zhao family borrowed our fish pond and refused to return it, angering Jiang Cheng's grandfather to death, crippling his father, and colluding with the village head to steal fish, force debt, and bully the Jiang family for a full decade. Now, Jiang Cheng has become the chairman of a listed aquatic company, yet he hides his identity and returns to the village, turning the tables to raise a pond full of scientific mutant piranhas! When the Zhao family digs the pond to steal fish, thinking they are scooping up a fortune, little do they know what they are welcoming in is a pond full of "Fish King of Hell"! From fish counterattacks to heavy debts, from greedy theft to a chain of overturns, the greedier the malicious neighbors, the more disastrous their losses. With the secret assistance of secretary Lin Wan, Jiang Cheng lays out his plans step by step, vowing to make the malicious neighbors spit out everything they usurped, pull out the protective umbrella behind them, and reclaim a decade of justice for his family!