At the end of the battle to get back their own world, each returned to their own place of Gatchaman= Jian, Tekkaman= City II, Polimar= samurai, Cassim = iron also four. But for some purpose, they once again crossed time and space and came to the same world with laughter. There, it is a world where the "Devil Party", the enemy of mankind, who threatens peace, and the "Science Ninja team" led by the rival Gatchaman keep fighting. However, in front of them, who felt disagreeable to the appearance of the world, a man appeared. That's the founder of the Science Ninja team, Dr. South. In the south, which showed a strange expression to Jian, whom he should have known, he said unexpected words to the heroes. It seems that you are my enemies. In addition, there is one who has been spying on them on the roof. It was Zeng and Jian who fought side by side against the Devil Party, the Science Ninja No.2. Its name is "Condor Joe". The new and fierce struggle of the four heroes will begin on the screen!