When the Shogun Tokugawa III is in bed with a girl, she turns into a monster. The court believes she is Ninja Magic, used to frighten the lord off women so that there will be no heir. Tôma, a famous swordsman, is called in and exposes the Ninja, even discovering their leader, a beautiful young girl named Kagiroi. Guessing that she is the daughter of some ousted daimyo anxious to get back into favor, he is about to unmask her when he is taken prisoner...

An atomic explosion awakens Gammera, a giant fire breathing turtle monster from his millions of years of hibernation.

A nuclear explosion in the far north unleashes Gamera, the legendary flying turtle, from his sleep under the ice. In his search for energy, Gamera wreaks havoc over the entire world, and it's up to the scientists, assisted by a young boy with a strange sympathic link to the monster, to put a stop to Gamera's rampage.

Two sisters live with their family. The elder is reserved; the younger lively. Yet, the former is first engaged and all goes well until the young man disappears