In medieval Japan, eight-year-old Hojo Tokiyuki is the heir to the Kamakura shogunate. But the Hojo clan is in decline, and Tokiyuki's peaceful days of playing hide-and-seek with his teachers come to an abrupt end when his clan is betrayed from within. The lone survivor of his family, Tokiyuki is the rightful heir to the throne, but to take it back, he'll have to do what he does best--run away!

The Hojo return to Kamakura was glorious but short-lived. Calamity has fallen upon Tokiyuki and his allies once again after losing the Battle of Sagami River. Yorishige realizes his time has come, and moves to cover Tokiyuki's withdrawal, but the young lord isn't giving up yet. Hoping to rescue Yorishige, he heads straight for his enemy, Ashikaga Takauji, to issue his challenge--"Kill me and you win! But if I escape, you lose everything!"