Shuma Kusanagi is an average high schooler. That is until he kidnapped by Iris, one of the three head households of vampires. Iris releases him now but he learns his father was a progenitor or better know as one of three vampire households. His life changes with Mari, a werewolf maid, and Calen, the daughter of one of three housholds, staying in his house. While suppressing his vampire urges, Iris's familiar Lycoris attacks him in hopes of awakening him. What will Shuma choose to do? Be human or be vampire?