Menace from the deep
(Junior Book)

Triton, the evil King of Atlantis, is sending his forces from a lost underwater city to the surface. He wants to take over Earth! Your quest is to defeat Triton, but first you must battle Hydros who is attacking a secret base on a volcanic island. Use your super-sub, Barracuda, to defeat Triton before he can complete his mission. You are the hero o