とあるオンラインゲームで、九賢者の一人という。渋い召喚士ダンブルフとしてロールプレイしていた咲森鑑は、プレイ中の寝落ちを境にゲームが現実となった世界へと飛ばされてしまう。しかも、老練な渋い賢者の姿ではなく可憐な少女の姿となって……。このままでは築き上げてきた賢者の威厳が失墜してしまう！そう考えた咲森鑑ことダンブルフは、賢者の弟子「ミラ」と名乗るのだったが——。

Sakimori Kagami plays a VRMMORPG called Arch Earth Online. He is a veteran player with the name and appearance similar to an elderly bearded wizard from a certain book about a ring. One day he purchases an appearance change item as a last resort to spend expiring currency and gets the idea of choosing what he would want to look like if his character was ever a girl. Falling asleep should have suspended the game, but Kagami wakes up still online and feels the game has has gotten a bit more realistic. Did Arch Earth Online finally get a long-awaited update?