Within the immersive MMORPG Sky World, countless players awaken to find themselves transported into the game's namesake realm. Among them is Junichirou Mikimori, now a resident of this fantastical world. His tale unfolds on Altaria Island, where he crosses paths with an exclusive all-female guild, forging bonds with two of its members. United by a common goal, they depart the island to trek towards the pinnacle of Sky World: Aion Island, their aspirations set on uncovering a path back to reality.