After a chance encounter, Tanya starts to grasp the meaning of the dream. Tagon’s plan upsets Taealha. Mubaek learns something astounding about Eunseom.

The first battle between Arthdal, led by Saya, and the united Ago forces, led by Eunseom, takes place in Hanchoa. Eunseom and the Ago forces gets overwhelmed by Arthdal's military power. Meanwhile, Tagon realizes the elevated status of Tanya as the second coming of Asa Sin and begins to feel threatened by her absolute power.

The united Ago forces faces an unforeseen situation, causing anxiety among its leadership that the alliance, which has been unified for 200 years, may fall apart. Meanwhile, Tanya is confronted with a truly incredible situation.

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The last prophecy by Aramun is announced. Eunseom, Tanya, and Saya try to figure out what it means!

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Eunseom finds an unexpected breakthrough in despair. Saya's plan envelops Arthdal in fear.

They need to stop Tagon. A brutal night falls on Arthdal. Eunseom advances close to Arthdal.

The day of Tagon and Eunseom's battle comes. Tagon faces a shocking truth.

Eunseom's Ago Union and Tagon's Arthdal have the final battle in the Arth Forest.

Eight years has passed since Tagon took the throne as the second coming of Aramun. Eunseom succeeded in uniting the Ago clans as the second coming of Inaishingi and he leads them to the great war against Arthdal. Meanwhile, Saya must prove his worth to succeed Tagon.

Sanung and the Saram propose an alliance with the blue-eyed Neanthal, but when things don’t go as expected, Tagon takes command of the Great Hunt.

The villagers cast suspicion on Eunseom upon learning that he has dreams. Tanya questions her destiny. Tagon greets his men in an unlikely place.

Upon finding Doti, Eunseom devises a plan to rescue the Wahan and is dismayed to learn the significance of Igutu - and what this means for him.

Eunseom and Doti run into a familiar face in Arthdal and make an alarming discovery. Sanung grows suspicious of his son. Tanya stands up for her tribe.

As Tagon’s declaration ripples through Arthdal, Eunseom contemplates the significance of what he saw. Mubaek seeks advice and is given a quest.

Taealha counsels Tagon about the impending meeting with Eunseom. Mihol tries to persuade Asa Ron to expose the truth. Tanya sees a mystifying vision.

Tanya receives word of the Wahan and meets someone who’s seen Eunseom. Saya grows increasingly leery of those around him. Tagon gets what he wants.

Mihol informs Tagon about the finer points of being a king. Saya’s appearance bewilders the Wahan. Eunseom receives help from the Neanthal.

The final battle between the Ago Union and Arthdal has come. Tagon prepares for a personal war. Tanya, Taealha, Saya, and Eunseom make one final move to protect what's most precious to them. Who will take over Arthdal?

Tanya who wants to change Arthdal's owner and Taealha who wants to protect Arthdal fight.

Saya has chilling words for Taealha. Tagon strengthens his grip over Arthdal. Tanya receives news of Eunseom and wonders what Saya’s dreams might mean.

Tanya proposes an alliance with Saya that proves to be useful for them both, Eunseom refuses to deny who he is, and ominous signs appear in Arthdal.

Tagon visits Tanya and asks about the Wahan. After hearing about Tanya's dreams, Saya decides to tell her his story. Mubaek comes across something odd.

Harim makes a startling confession to Mubaek. Chaeeun goes to see Tanya and tells her the truth about Eunseom. Mihol offers Taealha a way out.