Jaemin, Haechan, Jeno and Mark are pirates, they always destroy the marine ecosystem, they always steal fish in the sea that they have never seen. currently they are on a ship, they plan to steal fish, such as dolphins or fish that are expensive to sell. suddenly they saw a beautiful tailed fish, long and pink. however, its body parts are human-shaped. they thought it was a mermaid. finally, Jaemin as a pirate has evil intentions, they catch the mermaid with a net. you got caught by them.