After two years, the conflict between the Gamma World and the Human World is over, and Alain and Makoto were working hard alongside the others to return the world of Gamma to its true original world by turning the sky into a clean blue sky. However, the hardship of their work would be interfered when the imprisoned long time enemy of Adonis, Danton came to the Gamma world. Makoto is about to learn a horrible truth about himself and also Kanon, which gives him a great conflict path to save the Gamma World between him and Alain.
