Seeking to understand why he couldn't capture a hauntingly beautiful young girl on film, Kouhei Morioka stumbles into a medieval castle and a world he cannot comprehend.

Kouhei and Hazuki seek out the young vampire's childhood home, so that she may fulfill her last promise to her mother - the same mother who abandoned her two years past.

Kouhei's family, Hazuki, and Haiji seek mystical assistance at the Mido home in Kyoto. When Elfriede arranges a clandestine rendezvous with Kouhei, Hazuki steps in to set things straight.

Finding Kouhei a pitiful excuse for a slave, Hazuki uses her powers to brainwash another unsuspecting soul into following her every command. When Kouhei finds out, a painful fight ensues.

While Gramps and Elfriede join forces and take on Count Kinkel, Kouhei finds Hazuki and wakes her from an enchanted slumber. Unfortunately, the girl who rises to greet him isn't who he had hoped for.

Concerned for her servant's health, Hazuki embraces her catty nature and rises to the challenge - Literally! But when Gramp's condition takes a turn for the worse, this kitty proves to have some fierce claws.

Kouhei, Seiji, and Hazuki must set aside their fears and travel to the little vampire's childhood home. As Kinkel warps reality, each turns against the other, forcing Hazuki to try and drive him away.

With both sides of Hazuki battling for control, Elfriede convinces the young vampire to seek out another servant under the full moon's light. Kouhei heads out into the night after her.

During the quiet hours of the night, Elfriede unburdens her soul to Gramps. Kouhei, feeling powerless to protect Hazuki should another vampire come after them, decides to take his training into his own hands.

Kaoru, jealous of the bond between Kouhei and Hazuki, seeks to capture her betrothed's attention by copying the antics of the young vampire. It's a feline fetish under the full moon!

Hazuki and Hikaru rush unheeding into the arms of the enemy, and Yayoi and Seiji hurry to their aid. Kouhei is at the mercy of the child vampire, as the defender of the mountain watches from the forest.

Forbidden from killing Luna, Mistress Arte decides to kill the servant instead. Yet the Midou family hides its own share of dark secrets, for the truth behind Kouhei’s lack of psychic prowess is revealed.

Life for the Midou family returns to normal. Ryuuhei welcomes friends and family to celebrate, but plans go astray as the full moon feast begins. Kouhei might have to save the day one last time.