When the Japanese government launched a plan to discharge nuclear sewage into the sea, the mermaid civilization in the deep sea faced catastrophe.
At the same time, marine biologist Toru Fujiwara angrily tore up his government appointment letter in Tokyo.
In the strange blue light, she actually saw the fatal data covered up by the government in Toru Fujiwara's memory——
And in the deep sea fissures, an ancient pollution source thousands of times more terrifying than nuclear sewage is awakening...
