The Kishu clan loses its leader Sakamoto (Terajima Susumu) in a conflict with the rival Shinshu Clan, and a battle for succession breaks out. Meanwhile, Shizuya (Ito Kentaro), the head of the Shinshu Clan, puts the safety of his beloved Akino (Kakei Miwako) first and makes a proposal to the Kishu clan to avoid further conflict, but the situation deteriorates further.