The year is 1944, and the landings in Normandy have begun, turning the tide of World War II. A German pilot named Michael Ilgner accidentally steers his plane into a mysterious vortex during the battle. He is then transported to the magical parallel world of Quintia, where he is requested by humans and other peaceful races to use the powers …

Several months have passed since the protagonist of this game experienced the sexual pleasures and horrors of the mysterious mansion. One day he goes on a date with a girl named Reiko, and his girlfriend Y?ko gets jealous. Returning home, the young man begins to think of his behavior and how to improve it, and gradually sinks into a dream …