Part 2 of Arthdal Chronicles. Ta Gon has now become the most powerful man in Arthdal. He has an affectionate relationship only with Taealha, the daughter of the rival Hae Tribe, because of their shared ambitions.

Sa Ya has been kept confined into a tower because he is an Igutu, a hybrid between a Saram and Nweantal. Ta Gon chose to spare Sa Ya’s life as a baby, in the wars that wiped out all the Nweantals and brought him back to Arthdal. His relationship with Sa Ya is complicated as Igutus are hated in Arthdal. Tae Al Ha has helped Ta Gon raise him.

Tan Ya, in an attempt to escape from the fortress of fire, where she and her tribe were held as hostages, she goes into a room. This room looks exactly like what EunSeom had described as in his dreams. There she sees a boy that looks just like Eun Seom.

What will happen after Sa Ya, who longs to escape his tower, and Tan Ya, who yearns for revenge against Arthdal, meet for the first time?

First part of Arthdal Chronicles. Set in the fictional land of Arthdal during ancient times(bronze age). Eun Seom was born with a fate to bring disaster to Arthdal, which leads him and his mother, who wants to save him, to endure hardships. Finally, they decide to leave and travel together to a better place. Although Eun Seom grows up in the new land, he is seen as an outcast because he is different from the land's natives. Ta Gon is a war hero of Arthdal. He has paved the way for Arthdal to become a prosperous city and nation and he is the strongest warrior in Arthdal. He dreams of becoming the first king of Arthdal.

Tan Ya was born with the same fate as Eun Seom. She is the next great mother of the Wahan Tribe. But she has difficulty mastering the dance of the great mother and hasn't had a single dream since the Eun Seom appeared in their village.
Taealha is the daughter of the head of the Hae tribe. She has greater ambitions.