An Osaka gangster Shimamura just got married. His new bride, Mineko is also involved in drug trafficking. When she goes to China to make a deal, things get botched pretty badly. Shimamura must travel to save her and recoup his employers’ losses.
Ken, son of a former samurai settles with his family in the west from Japan. Soon his family is killed in front of him by stagecoach robbers, making him aim to get revenge. Marvin an experienced gunman befriends Ken and becomes his mentor.
While covering a test of guided torpedoes, two reporters believe they see what appears to be a strange-looking swimming creature. They investigate the matter further and discover that there is a race of fish-men living under the sea. The fish-men capture the pair and keep them prisoner in their underwater city.
In 1980, a giant planetoid named Gorath is discovered to be on a collision course with Earth. Even though it is smaller than Earth, its mass is huge enough to crush the Earth and destroy it. A mission sent to observe Gorath is destroyed after all the orbiting ships are drawn into the planetoid. A later mission is sent to observe and the crew barely leaves before suffering the same fate. However Astronaut Tatsuo Kanai is left in a catatonic state due to his near death experience. The Earth's scientists then come up with a desperate plan to build giant rockets at the South Pole to move Earth out of Gorath's path before it is too late.
During the raging war between the Toyotomi and Tokugawa clans, the swordsman Mohei (whose family has been completely decimated) is recruited by Toyotomi to overcome the seat of power, Osaka Castle. Mohei's daredevil skills will be put to severe tests.
