The spaceship AAB-Gamma is dispatched from FAFC headquarters in Japan to make a landing on the planet Mars and investigate reports of UFOs in the area. As they near the red planet, they encounter a mysterious UFO that coats the ship's hull with unusual spores. Taking one of the specimens back to earth, it soon develops and grows into a giant chicken-lizard-alien monster that tramples Japan.
The world-famous woodblock artist Hokusai (1760-1849), a widower in need of a steady income, lives with his daughter Oei in the house of his friend Bakin.
A retired actress whose husband has recently died visits her summer home. There she has encounters with old friends and acquaintances who bring various stories and news of death and the past
