In the MMORPG Live Dungeon, Kyotani Tsutomu skillfully completed the game using five notebook PCs before its shutdown, only to find himself transported to a new world. Witnessing a reckless dungeon run in this unfamiliar realm, Tsutomu, now assigned as the healer, reverts to his beloved White Mage role. Determined to uncover the secret for returning home, he sets off to conquer the dungeon with his strategic prowess.