A small billi fish swimming near the sea shore where the chemical plant stood was infected with an incomprehensible virus. Returning our hero infected several of his friends. Now you in the game ill Billy will have to cure them all. In front of you on the screen will be visible various small fishes and other sea inhabitants. In order to effectively conduct the treatment you will need to look for completely identical creatures among them. Once these are found, select them with a mouse click. So you cure them and send them to swim in the sea.