Out-of-control gene editing triggered a global red tide. Red algae covered the sea surface and released toxins that reduced the land to a desperate situation. Humanity was forced to migrate to the deep-sea base "Canglan City". During a mission to detect the edge of a red tide, deep-sea explorer {Chen Shen} accidentally captured a mysterious energy wave. Following the trace, he discovered that there was an alien ruin hidden deep in the red tide - its energy was accelerating the mutation of marine life, giving birth to terrifying monsters with flesh and blood flying everywhere. At the same time, the senior officials of Canglan City secretly provoked infighting in order to fight for control of the ruins, and even planned to use the power of the ruins to enslave the remaining humans. Chen Shen was forced to join forces with his trusted teammates. Under the hunting of mutant mosasaurs and the conspiracy of human traitors, Chen Shen crossed the deadly red tide zone and sneaked into the core of the ruins, trying to uncover the deep connection between alien civilization and the end of the earth, and protect the only remaining hope for mankind.
