After being forcibly separated by his uncle's family, Shen Yan, along with his mother and younger sister, moved into a leaking seaside shack. To find food, he went to the reef cave where his father stored tools, accidentally awakening the Picture of the Eight Immortals Crossing the Sea, acquiring immortal techniques, and gradually mastering new skills through gathering seafood. Shen Yan explored foggy reefs, dived into the deep sea, and searched for sunken ships, relying on catching precious seafood to support his family, build a new house, buy a fishing boat, and make the vicious relatives and rivals who repeatedly seized goods and harmed them pay the price, while also developing romantic feelings for the restaurant owner Ye Qingtang. With business opportunities appearing in distant waters, he decided to set sail southward, taking the first step toward the dream of owning his own fleet!