The disappearance of fishermen occurred on Yanbo Island. Lao Lin, a fisherman on duty at night, encountered black slime and disappeared from the fishing boat. With the disappearance of Lao Lin, a mysterious girl entered the town. The next day, students from the island, Fu Junhao, Zhang Yuxuan, and You Shangjie, met a girl struggling on the ground. Fu Junhao cared about the girl, but the girl ran away.
Fu Junhao followed the girl to the dry well. The girl disappeared but found strange noises in the well. Then he saw a black mucus fish jumping out of the well. In the geography class, Sara was talking about environmental protection, and Fu Junhao proposed to go fishing boat together.
In the evening, Fu Junhao and the other three came to the fishing boat. The three found the mysterious girl hiding on the boat. With good intentions, Fu Junhao took the girl home and had to keep the girl at home. When the girl was alone in the room, her expression suddenly became strange. At this time, You Shangjie was attacked by “black slime” on his way home alone and disappeared without a trace.
