Otonashi Meimi is walking alone in an empty park when the demon Rococo suddenly appears. Rococo users her Eternal Arm attack on Meimi in order to separate the power of Misty Mei from within her body.
Meanwhile, at Naoto’s house, Hikaru, Naoto’s stepsister who was studying abroad, returns home. She starts going to the same school as Naoto, and it worries Rika, Naoto’s lover, a little.
“I love you the most in the world.” – With these words, Naoto makes love with Rika in the school nurse’s office. However, Misty Mei appears and spirits Rika away. Then, the angel Luvril appears saying that Naoto has no choice but to have sex with Hikari so that a new Djibril can be born to save Rika.
Join this band of femme fatales as they sacrifice their dignity to save the galaxy from unsavory space pirates. To solve their cases, they battle the bad guys, rescue stolen treasure, and wrestle space aliens. No job is too big, no humiliation is too great, and no alien has too many tentacles to keep them from the big score.
On their latest mission, the Battle Can-Can girls are out to retrieve a stolen artifact known as the Cosmic Firefly, a gorgeous but fragile jewel worth many billions of dollars, much more than what they make in a year! In order to return it to the rightful owners, they must subdue the most vicious space pirates, have sex with aliens, and confront a traitor from within!