Destinies converge in Japan after a barbarian ship washes ashore in a poor fishing village. Meanwhile, in Osaka, Lord Toranaga finds himself outplayed by his enemies.

Blackthorne and Mariko test their new alliance as they train Toranaga's gun regiment for war. Yabushige must navigate his past promises to Ishido when an old friend comes to the village.

Lady Ochiba returns to Osaka in order to accelerate the Regents' campaign against Toranaga. In Ajiro, Toranaga tests Mariko's loyalty to his cause.