The popular Idol group "X Girl" is going to preform at a live venue, fans are eagerly awaiting their appearance. But this time, the three beautiful sexy idols are high up in the sky on a secret mission, with their airplane's cockpit damaged it descends upon the concert venue.

According to old legends, the Stanle stone is said to contain the unlimited power of the universe... And the day when its power will be liberated fast approaches... Lila, an amnesic girl who holds the key to the secrets of Stanle, meets Lin, a boxing expert, and Aya, a girl who loves playing with guns. The three girls join forces to resist their pursuers and approach the heart of the legend... Simpler fan's synopsis - Charlie's Angel trio kind of but without Charlie in thongs and sexy outfit on a fantasy in a after-apocalyptic-world-like Hokuto no Ken instead of Mad Max, banded together one a journey to obtain the Stanle (nothing to do with Stan Lee) stone that it is said to hole unimaginable and fathomable power.

December 1, 2043 AD. The mysterious lifeform BABY invades Earth and takes control of a number of human hosts, parasitising them. The possessed bodies metamorphise into monsters called ‘Organos,’ which slaughter a great mass of humanity in a series of bloody massacres, bringing mankind to the brink of extinction. Thereafter, December 1 comes to be known as ‘Extinction Day.’ While battling an Organo, Elettra, the protagonist of the story, finds that her left hand has been infected by BABY. However, aside from a throbbing pain in her hand, nothing about the rest of her body changes. Elettra begins to search for other survivors, hoping to solve the mystery of BABY...