Opil is a plump who likes to play monsters, read comic books and eat candies and chips. The only thing he hates is fish. But his mother wants him to eat properly and cooks the Wish Fish for him. She tells him that if he eats the fish all his dreams will come true. Opil doesn’t take her seriously and when chewing the dish mumbles that he wants the aliens to come to Earth and destroy all aquatic life. To the boy’s amazement, his wish comes true. An army of aliens from Saturn invades the Earth. The invaders destroy the aquatic life and drain the oceans. How to stop the treacherous marauders?