The story is set in the early years of the Edo period. Juan Goto, a samurai under Masamune Date and the lord of a region called Fukuwara, is visited by a ninja named Senki on the orders of their lord.

Nowadays, the Tokugawa Shogunate's oppression of Christianity is becoming increasingly severe. But Juan, as a devout Christian, doesn't stop his missionary work and is now a wanted man.

Senki is on a top-secret mission to take Juan to a certain place.

A blessing reaches the Christian samurai who risks his life for his faith.
But the clutches of the persecutors are just around the corner...!!