All's quiet in the kingdom of Qin until not one, but three armies attack--and, as a steady stream of messengers reveals, that's just the half of it.

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

Qin sends its troops to defend Hangu Pass, sole gateway to the kingdom. An impressive array of military might is on display as the battle kicks off.

Lord Biao's army finds itself in a bad situation soon after fighting begins. The Wei army brings in equipment that has Zhang Tang rolling his eyes.

As the Wei army tackles the mighty Hangu Pass, the allied army of Meng Wu and Teng are battling 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.

The horrors of Changping nearly two decades ago have spurred Wan Ji and his army to seek revenge against Qin, with Xianyang slated for annihilation.

A new commander takes over Chu's second army, bringing along a new strategy and a lot of confusion. The grotesque Cheng Hui of Han makes his move.

Rumors about Qin reach Qiang Lei on her journey. Li Mu calculates the best time to strike, and the Battle of Hangu Pass reaches its turning point.

Teng makes a bold decision when his army finds themselves in a bind. Cheng Hui's move pays off. Wei's Wu Fengming has another trick up his sleeve.

As Cheng Hui's poison courses through Zhang Tang's body, the mighty Qin general takes advantage of Huang Yi's cunning strategy and enters the fray.

Qin general Wang Jian seemingly vanishes, army and all, mid-skirmish with Wu Lu Duo and the Yan army. Chu's newest commander goes after Teng's head.

Meng Wu repeats his daring echelon sweep against Chu, but with a twist. Chu's massive Han Ming faces off against Meng Wu in a battle for the ages.

Wa Lin devises a way to hurry along the generals' duel. Li Mu and Lord Chunshen discuss a new strategy, while Wa Lin shows her hand at long last.

The Qin army is riding high when Wa Lin's elites arrive at Hangu Pass. An unpredictable Qin general steps in to assist. Diao is cautiously optimistic.

The royal capital of Xianyang is feeling the heat as outpost after outpost falls in the south of Qin. The most ominous question: Where has Li Mu gone?

Qin's Lord Biao confronts Li Mu at the center of his clever whirlpool trap, where he meets a savage warrior with a history of battling great generals.

Xianyang is in disarray as Li Mu's army approaches and King Zheng goes missing. Qin formulates a strategy around a southern outpost--its last hope.

It's up to King Zheng to convince the people of Zui to fight, defending Xianyang and Qin itself. Li Mu's arrival makes them second-guess themselves.

The first day of any battle is a high hurdle to clear, even without civilian troops. Li Mu employs unique tactics overnight to gain the upper hand.

Xin's training with Qiang Lei comes in handy at Zui. Zheng continues to rally the civilian and veteran troops--until something goes terribly wrong.

The castle town of Zui is struggling to stand strong in their drawn-out battle, suffering serious setbacks that put Li Mu on the path to victory.

Reinforcements arrive for Qin, and not a moment too soon. But even the most ferocious mountain warriors are no match for one of Zhao's Three Greats.

An exhausted Xin draws on what remains of his strength to face Pang Nuan. The end of the war with the coalition army is in sight, but at what cost?

The country of Qin celebrates its victory in its capital Kanyou, with a ceremony rewarding the warriors who have distinguished themselves in a notable way against the coalition. On the other hand, Kyou Kai, who left the Hi Shin unit to avenge his sister Kyou Shou, is getting closer and closer to his target, Yuu Ren...

Kyou Kai continues to confront Yuu Ren's subordinates, but preserves herself for the latter. It is time to avenge Kyou Shou, it is time to clear the past. But Yuu Ren is still the one who overcame the ritual. She might be stronger than Kyou Kai imagines.

The seven nations of the Middle Kingdom come to grips with the fallout of the massive coalition army war as internal disputes move to the forefront.

Qin chancellor Lü Buwei schemes to gain more influence in the Royal Court. Zhao makes a surprising move, prompting Cheng Jiao to make one of his own.

Tunliu rises in a revolt against the rulers of Qin--one with Cheng Jiao at its center. Old friends reunite as they're deployed to quell the uprising.

Pu Ge reveals his scheme, but doesn't take the bigger, better Fei Xin Force into account. Cheng Jiao takes a gamble as he faces the fight of his life.

A wounded Cheng Jiao confronts Pu Ge, then has a heart-to-heart with Liu Yi and shares words of wisdom with Xin as the fighting in Tunliu subsides.

Xin and Wang Ben are summoned to assist General Teng in a complex battle with Zhao, but Zhao's star general has some monumental aces up his sleeve.

Kai Meng, Fire Dragon of Wei, challenges Xin to a duel as the battle rages around them. Qiang Lei must act quickly when something goes terribly wrong.

Diao meets with Kai Meng in the Wei camp while Xin and friends scramble for a way to get her out. The Yu Feng Force faces another brutal Fire Dragon.

As Wang Ben tangles with master spearsman Zi Bai, Ling Huang gives Wu Fengming and his officers insight into his fellow Fire Dragon's past and psyche.

The three Qin units prepare for the climactic third day of their coordinated assault on Wei's main camp in Zhuyong, with each facing a formidable foe.

There is only half a day left for the Hi Shin unit to reach Go Houmei's HQ. The strategists of both camps, Karyo Ten and Junsou, will be able to measure their talent.

Xin finds himself trapped as the simultaneous triple-strike comes together; Wei's unsuspecting main camp panics with the three Qin armies closing in.

Zhao's military minds ponder the aftermath of the Battle at Zhuyong. A powerful figure visits the Royal Court to stake a claim on the new Qin outpost.

The plans of the Queen Mother and her lover Lao Ai soon come to light: the foundation of a new state, within Qin itself. The affront is such that it calls for a response equal to it.

Wang Ben and Xin are rewarded for their actions in Zhuyong as Ai grows ever stronger. Lao Ai reflects on the path his life has taken to this point.

Ai's foreign-backed chancellor puts the Queen Dowager in an impossible position as Zheng prepares for the crowning ceremony in Qin's ancient capital.

A supersized Ai army approaches an underdefended Xianyang. The Queen Dowager and Lü Buwei both have their own epiphanies during the crowning ceremony.

The Fei Xin Force meets up with allies before a pitched battle across a key river. Troops descend on Xianyang as Xiang recalls Zheng's parting words.

Xin explains how Diao learned of the rebellion. Lord Changping makes a momentous decision. The seige of Xianyang intensifies as Xin's troops arrive.

Xin pushes onward to Xianyang's Inner Palace as Xiang and Yang are taken to safety. Lü Buwei explains his views to Zheng and how he would rule Qin.

Zheng refutes his chancellor's notion of ideal government and articulates his reasons for a united Middle Kingdom. Xin gets turned around in Xianyang.

The court ladies make a run for it when their safety is compromised. Shang Lu's ailing army is just barely keeping the enemy out of the royal capital.

Qin army high commander Lord Changping shows what he's made of on the battlefield with an all-or-nothing maneuver meant to immobilize Duke Rongdi.

Lao Ai, the man who orchestrated the uprising, must finally reap what he's sown. The Queen Dowager makes a last-ditch plea at her lover's hearing.

The rebels and masterminds behind Ai's uprising meet their fates--or rather, most of them do. Zheng discusses his vision for Qin's future with Xin.

Qin goes right back to the battlefield. Wa Lin is tapped to help the troubled nation of Chu. The young commanders discuss the next Six Great Generals.