Three armies descend on the kingdom of Qin in a sign of hard times to come.

Cai Ze gets a royal audience in hopes of using diplomacy to save Qin; Xin tags along with Lord Biao's army.

Qin sends its troops to defend Hangu Pass; the sole gateway to the kingdom.

Lord Biao's army quickly comes under pressure while Wei's actions irk Zhang Tang.

As the Wei army tackle the mighty Hangu Pass, the allied army of Meng Wu and Teng go up against the Chu army and there are old scores to be settled.

Xiang Yi brings out his favorite weapon: a legendary sword; Teng takes on the fierce Chu general Lord Linwu; Xin faces a Zhao army with a grudge.