きがある朝目を覚ますと、世界中にうさぎの耳を生やした人たちがあふれかえっていた！どうやら「月のプリンセス」と名乗る人物が、ステージで人々をとりこにし、しもべを増やしているらしい。この二人に対抗するべく、「ゴシック三銃士」が剣を抜く！
Raki wakes up to an emergency phone call from her sister, the Moon Princesses are invading Earth and turning everyone into their bunny eared servants. Raki cannot believe what is happening and is taken by a mind controlled Aine and Mio to see the Princesses. Sakuya and Kaguya attempt to turn Raki into one of their servants but she is saved by Alica, Lily and Yurika Toudou. Yurika challenges the Princesses to a duel, with Sumire appearing and siding with Sakuya and Kaguya, who subsequently transport everyone to the Moon. As the Gothic War begins, it looks like its up to Raki to save the day.
