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 faces surprisingly difficult obstacles as Kenji Kira raises the dead against him and his own flesh and blood betrays him.