Kaname Kuran wakes from a thousand-year sleep with no memory of who he was, reborn as a human. Two vampires, Ai and Ren, take on the task of walking him back through everything that happened while he slept, including what became of Yuki Cross and Zero Kiryu, the two people whose choices shaped the thousand years he missed. This sequel unfolds in fragments rather than straight chronology, piecing together the relationships between the three of them from scattered memories.