In the interstellar year 2130, many creatures with human bodies, fish tails and rotting bodies appeared inexplicably on various continents. They attacked humans indiscriminately. Scientists named them "mermaids" because of their characteristics. The strange thing is that they are afraid of the ocean and can use fish tails to squirm like snakes. Human weapons can hardly hurt them. In order to find a chance to survive, countries consciously let their top scientists board submarines made with the latest technology of the motherland to study ways to deal with these creatures. The atmosphere of doomsday is rising, dangers are everywhere at sea, and there is killing on land. Little do they know. What is happening in this apocalypse is a ceremony to reveal the truth, a true redemption.
Purpose: Protect the ocean