Set in a futuristic universe in which artificial intelligence is considered religious taboo, Sage Fusion 2 tells the adventure of a businessman and his bodyguard who descend to an underground world, trying to get back their reportedly stolen spaceship after it fell and crashed in the middle of the city—an accident behind which lies a conspiracy that involves the galactic government, the military, the church, and centuries-old historical legend.

Sage Fusion 2 is a hybrid between Role-Playing Game (RPG), adventure, and visual novel. This is the sequel of the previously released Sage Fusion game, and is the last chapter which concludes the story. However, the game is designed and written so that new players who haven’t played the first game can also play it.