Cheng Yanzhou and his girlfriend Su Xingtang woke up at the Gray Ou Port on the edge of the East China Sea at the same time. One got the Boundary Fruit and the other got the Star Blade Fruit. The residents here are trapped in layers of ledgers, ships, registration plates and the corrupt navy, making even leaving the port a luxury. The two originally just wanted to find a ship to go to sea, but in the process of tracing the White Line Gull, the lighthouse signal and the main ledger, they discovered that Gray Gull Harbor once led to an erased free route. In order to regain the ship and allow the trapped people to choose where to go again, they began to dismantle the control network jointly woven by the black market and the navy. From Debt Street to the old dock, from the star map fragments to the boundless sea, a new route is being charted by their own hands.
