ファンタシースターアドベンチャー

The player's character is an agent in the town Paseo on Motavia. The year is 1268 A.W. The player's character receive a letter while on base from a long time friend Ken Miller. Ken is a scientist currently studying on the ice planet Dezolis. The letter is rather cryptic and only says the following: "How are you? I have succeeded in the discovery of the century. You must come and see it."

The player make plans to travel to Dezolis and find what Ken is so excited about. After take the space shuttle to the planet, you travel to the town of Carsonville. There, you discover that Ken invented a machine that can transform humans into immensely powerful beings. Because of the implications of such an invention, Ken is kidnapped and his device is confiscated. As an agent, the player must solve this mystery. Ken's sister, Lila,assists the player during the investigation.