This is a story of the unrelenting efforts of the Ultra Guard, that defends Earth from alien invaders, and Ultraseven, a hero that helps humans hand-in-hand with the Ultra Guard.
The "Seahorse" Ocean Base was blown down in front of Dan and Anne, who were enjoying swimming on their vacation. Shinichi, a boy who predicted the incident, said it was done by Nonmalt, the real aboriginals of the Earth.
S1E42 25 min