In heaven, Nanael is summoned by Seraphim, the head angel who plans to exile her as she has forced people to fight each other. Seraphim threatens to send her to hell unless she goes to where the Swamp Witch is and find out what the Swamp Witch is up to. Hachiel, a fellow angel, goes with her and falls into the swamp. She is rescued by Reina. Nanael is relaxing in a hot spring by the entrance to hell when Melona, Menace and Airi show up in a nearby spring. They all discuss about how they were defeated by Reina and Nanael passes out from the heat and turns up in the same spring as the other three. Nanael accidentally tells them she has come to observe the Swamp Witch. Nanael offers to tell them where Reina is for information about the Swamp Witch. They tell her that the three of them have been asked to participate in Queen's Blade. Nanael tells them the direction to go to find Reina and they run off to find her. Nanael realises she has put Reina is grave danger and goes to stop the three of them from reaching her and they fight, and Nanael swiftly defeats them. Upon returning to Heaven Seraphim still banishes Nanael from heaven, and tells her she must follow and help Reina on Earth.
天使長に呼び出されたナナエル。数々の不正行為のため、このままでは冥界落ちと言い渡されるが、あることを条件に冥界落ちは大目にみることを約束される。お供の天使ハチエルを引き連れ沼地の魔女の領土に潜入するが…。
