When a rocket carrying a payload of nuclear explosives crashes into the sea, the Science patrol leads the recovery effort. After all but one have been found, a mysterious monster begins terrorising the Japanese seaside -- right where the Science Patrol Member Fuji is trying to take a vacation!
“海底原人ラゴン登場”
事故で爆発した原爆の影響でラゴンが巨大化。さらにラゴンの足には、もう一つ残った原爆が付いていた・・・
