The story begins when the thief Slade comes and steals the jewel of light and darkness at Granseal Castle, and he accidentally frees the demon king Zeon. The next day the king was attacked by a sick creature and fell ill, at this time Sir Astral and his students including Bowie investigating the relevant events accidentally discovered the Tower of Ancients. Open and from there appear monsters attacking them. Returning after the defeat they visited the king and witnessed him being captured by the army of neighboring Galam country, shortly after Bowie was also arrested. In the dungeon, they meet the thief Slade, who returns the jewel to Bowie and together on their journey to seal Zeon once more. As Bowie, you will lead the team to fight against countless enemies, each of the groups all with their own strengths and personalities. When encountering enemies, you can launch attacks by approaching them, now you will be redirected to a screen where the battle takes place. The world in the game is very large including many towns and dungeons. Here you can interact with NPCs, talk and accept quests from them.
