Upon Zero Kiryuu's return to Cross Academy, Yuuki Cross is relieved to discover that he is safe. However, she quickly realizes that he is not the same person he once was. Zero's choices have led him to suffer from unsettling visions, prompting him to search for their origin, unaware that the answers may be within reach. As if things couldn't get any worse, Yuuki becomes plagued by harrowing hallucinations, leaving her no choice but to turn to the only person who can provide her with clarity about her mysterious past: Pureblood vampire Kaname Kuran, whom she holds dear to her heart. But what will happen when the revelations finally come to light?