The male lead owes 180,000 in online loans, and is miserably fired by the company. When pushed to a desperate end standing on the roof, he unexpectedly obtains the "Sea God System" and returns to Moon Bay. Relying on the system's power, he successively reels in priceless big fish, with a single one selling for 100 million. From then on, he reverses the situation and completely changes his life. Finally, he buys a boat of his own, sails toward the vast sea, and starts a brand new life.