An unknown girl with invisible hands, or vectors, and telepathic powers escapes from a secret facility. The next day two cousins, Kouta and Yuka, find her. But she is different from before. She can only say one word, nyuu. Not knowing anything about her, the two cousins take her in. Kurama, the head scientist from th efacility where she escaped, has sent a merciless man, Bando, after her.

Yuka informs Mayu of Kouta's past. Meanwhile, Lucy and Mariko find each other and face off in a fight. Now, Nana and Kurama have to find Mariko because Kurama needs to kill her...