After his father is murdered and a ninja saves his life, Taro discovers the connection between ninjas and vampires and finds himself being dragged into a bitter conflict between the rival lords ruling Japan.

In sixteenth-century Japan, Taro enlists his friends to help vanquish a dragon in hopes of winning a reward that would allow him to marry Hana, but he also faces surprisingly difficult obstacles as Kenji Kira raises the dead against him and his own flesh and blood betrays him.