Deep in the ocean, TOPO THE OCTOPUS plays some relaxing music for AQUAMAN. Suddenly, a huge whirlpool appears in the distance, threatening the city of ATLANTIS. Without a moment to lose, AQUAMAN leaps aboard his SUPER-SEAHORSE, STORM, and jets toward the liquid tornado. While the SEA KING rescues a whale caught in the deadly current, his SUPER-PETS discover the source of the problem . . . MISTY and SNEEZERS, the BLACK MANTA'S minions! TOPO, STORM, and ARK THE SEAL, must stop these evil rays, or their underwater city could be lost again.