In the Black Tide Era, a bizarre black tide devoured most of the land, and humanity survived by relying on floating city-states. The Chaos-born Ancient Wharf is both the lifeline for humanity to mine source crystals and the sealing lock core that suppresses the evil gods of the Cangming Realm. Lin Ye, a low-level porter, originally wanted to investigate the truth about his parents' deaths back then. When the Tide-Breaking Society attacked the wharf, he accidentally awakened the Chaos-born bloodline and was chosen by Port Master Wei Cang as the Port Guardian. He fought side by side with combat captain Su Qingyuan, team member Xia Ning, and others to counter the Tide-Breaking Society led by his senior brother Shen Ji. Witnessing the continuous degradation of the seal, Shen Ji was determined to use the sacrifice of half of all living beings as the price to cast a forbidden technique to slay the evil god. Exploring the true meaning of protection and sacrifice.