Helena-May is known to the Doctors as 001, meaning that she is the first test of this kind to exist. 001 has been forced against her will, since birth, to under go tests, that she has no idea the reason for. When she gets released for one day to a place she has never thought existed, having been given no knowledge instructing her what to do, or how to act, Helena tries to find the person that she wants to harm for her depression and paranoia, however, that same person is the only one that can give her hope. Unknown to her that there was a reason she got put in there, to protect her.
Yuki and Zero live a happy life now. They are married and they had children. But now, Yuki will have to go through a test. A test to see if she is worthy enough for an important decision in the vampire world. Could the test be a new beginning, or the death of her?