Genre: Minimalist Futuristic Sci-fi

Timeline: 2100

In the year 2100, the non stopping global warming causes the sea level to increase which also leads to all the land of every continent to sink up to 5km underwater. At the meantime, the pandemic situations also worsen due to the mutation which also affects the quality of air on most of the land in every continent. Humans have predicted these causes and have developed an underwater colony which retrieve energy sources with the high technology they invented earlier. Basic needs and plantations growth are manageable underwater as well. The year passes by and human have developed their colony even deeper underwater.

Other than that, underwater creatures' exploration has been updated up to 40% according to the underwater wildlife research team. A mad scientist, Dr. Crooks who has been having the vision of recreating siren species to live back in underwater with the underwater ecosystem. People have been insulting and discriminating him ever since he proposed his visions to the national research organization.

Until one day, he managed to merge the DNA of marine animals into human body which concludes into a semi aquatic species of human being. His invention was also known to be banned due to the illegal action taken by him to use protected species as experimental subject. During the arrest of Dr. Crooks, he injected more marine creature’s DNA such as shark, dolphin, and octopus. Each of these DNA allows him to evolve into a species that have the ability to breath underwater, communicate with marine creatures through soundwave and camouflage. The scientist himself also augmented his body with cybernetics which allows him to have a strength of a superhuman. With the hatred that he has built all the years, he wanted to take revenge on every single person who mocked and laughed about his idea and invention. Eventually, the humongous species also appeared around the human colony which leads to the concern of lost species such as megalodon and kraken.

One day the united nations defence department detected a gigantic new species wandering around the colony as if it is predicting the next move. Soon it is identified as The Leviathan, a sea serpent from Jewish mythology. It was also identified that Dr. Crooks was the one who manipulate these colossal creatures to invade the underwater colony.

The captain of the underwater city defence team, Sergeant Rivers had to come up with a plan with a strategist Prof. Heather to neutralize the situation and stop any action cause by the mad scientist and the marine colossal creatures. These colossal creatures are known to receive a false message from Dr. Crooks to destroy the aquatic ecosystem through the translation of the creature’s soundwaves. Prof. Heather must cooperate with the top biologist and have to amplify the correct message through soundwave projection to the colossal creatures. The defence team also make a temporary prediction of bracing for themselves and there might be possibility of migrating back to land.