River Where the Moon Rises S01E18 - Four Years Later/The Envoys From Silla

Part one: It is now four years after Gochuga's death, and Crown Prince Won sits on the throne of Goguryeo. Pyeonggang fights war after war to help the young king, but her brother seems to misunderstand her intentions. Meanwhile, Dal lives like a hermit in the woods, and Geon lives as a drunkard in Silla. However, he suddenly decides to return to Goguryeo. Part two: Pyeonggang goes to the mountain where Dal lives in hiding. Despite their longing for one another, they realize that they have different paths to take. Meanwhile, Geon and Mo Yong show up in Goguryeo as the envoys from Silla. With everyone in an uproar, Pyeonggang tries to dissuade her brother from taking rash actions against Geon.