Jiang Che uses a crab-detection algorithm he developed himself to help his older cousin locate a crab swarm, but all he gets in return is a humiliating 2,000 yuan and being kicked off the boat. Armed with his battered equipment, he returns to the harbor and joins forces with Uncle Zhao to venture into the open sea, navigate hidden reefs, catch king crabs, and build Deep Abyss Heavy Industries. From a crab-detection kid everyone looks down on to a deep-sea overlord commanding the distant oceans, he will make every traitor witness the true hunting grounds as they finally open their gates.