Aa Megami-sama is a game based on the popular manga and TV series with the same name (internationally also known as Ah! My Goddess). The game follows the story of Keiichi Morisato along with all three goddesses - Belldandy and her two sisters, Urd and Skuld. The four of them won a lottery trip which landed them on an uninhabited island shrouded in mysteries. The trip, however, was a trap devised by Marller and Hildr, which made all three goddesses lose their magic. The good thing is that is is retrievable, and it is somewhere on the island. In this third-person 3D adventure game you explore the island and solve various mechanical puzzles while trying to restore Belldandy's, Urd's and Skuld's magical powers.

Ah! My Goddess takes place on an uninhabited, magical island, to which Keiichi, Belldandy, Urd, and Skuld are mysteriously invited. In reality, they were brought here by the Spirit of the Silver Watch, who rules over the island, with the help of Mara and Hild. The Spirit needs the goddesses' help with fixing a flaw in the center of the island, and she traps them and Keiichi inside a magic maze to drive them to the center of the island so that they can free themselves.