Taichi Hiraga Keaton, the son of a Japanese zoologist and an English noblewoman, is an insurance investigator known for his successful and unorthodox methods of investigation. Educated in archaeology and a former member of the SAS, Master Keaton uses his knowledge and combat training to uncover buried secrets, thwart would-be villains, and pursue the truth...

"If you have the willingness to learn, you can learn anywhere." With this message from his old teacher in his heart, Taichi Hiraga Keaton finally lands in Romania, where ruins of the Danube civilization lie. Yet what awaits Keaton is a horrifying event that shocks the entire nation!