Based on the first Wizardry game "The Proving Grounds of the Mad Overlord", a group of characters enter a dungeon to confront the ultimate wizard to prevent him from reaching an unstoppable power. On their way they meet up with a few new friends who have their own battles to settle, but their paths lay together.

Susanoo, the youngest child of the creation gods Izanagi and Izanami, is a mighty warrior, easily able to defeat tigers with his bare hands. After his mother dies, Susanoo is devastated. Determined to travel to Heaven to find her, he carves a boat out of a tree, and along with his rabbit companion, Akahana, he prepares to cross the ocean. As Susanoo does not know how to reach Heaven, he first visits his brother, Tsukuyomi, leader of the Night Kingdom, and his sister, Amaterasu, leader of the Light Kingdom. While his siblings can warn Susanoo of the dangers he faces, they are unable to stop him or provide him with the directions to Heaven. As Susanoo continues his journey to the ends of the Earth, Orochi, an eight-headed dragon, awakens to stand in Susanoo's path.

A foreign transfer student from the city arrives one day in a Japanese country town. Enchanted by his air of mystery, his classmates nickname him "Matasaburou the Wind Imp" after a local legend. Eventually they become friends and spend many days playing in the countryside. One windy day, Matasaburou returns to the city, leaving his classmates to speculate that he really was Matasaburou the Wind Imp and that he flew away on the wind.

A young girl named Tomoko visits the Hiroshima Peace Memorial. There she has a mysterious meeting with Sadako, the little girl who was 2 years old when the U.S. dropped the bomb on her city during WWII and 11 when she died from the effects of radiation poisoning. Sadako takes Tomoko on an eye-opening journey.