When Mugen wounds an enemy's arm, it sets off a dangerous chain reaction. Fuu is kidnapped, and two deadly assassins are dispatched to make short work of vagabond Mugen and ronin Jin.

Fuu harbors a female fugitive who's on the run from a bogus, gun-slinging missionary. The new girl is trouble, no doubt about it, but she may hold the finding the samurai who smells like sunflowers.