River Where the Moon Rises

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.

Part 1: Go Geon comes back to Goguryeo as an envoy of Silla. As the palace of Pyeongyang is in a state of unrest with his presence, King Yeongyang thinks deeply of what to do with him. Meanwhile, On Dal lives lonely in the mountains until he hears some unexpected news. Not knowing the true intentions that Go Geon holds, the tension within Pyeongyang palace thickens. Part 2: On Dal sets off from the mountains to save Pyeonggang from execution. Although he manages to get there in time, he makes a promise with the King in return for the Princess' safety. Meanwhile, in Silla, Go Geon tries to persuade King Jinheung in order to attack Goguryeo with Silla's armies. The two empires now grow restless in the midst of war.

Part 1: King Yeongyang decides to send reinforcements to Adan Fortress where Pyeonggang and Dal fight to defend it. Dal commands Pyeonggang and Jin to take the wounded back to Pyeongyang Castle, but Pyeonggang has plans of her own. As he awaits the Silla army to attack, Dal receives a letter from King Jinheung instead. Part 2: Pyeonggang escapes the Silla army camp with Mo Yong and Geon. Dal rushes to save Pyeonggang, but when he arrives, Geon is fatally wounded. Leaving the two behind, Pyeonggang and Dal return to Adan Fortress. As they near their troops, they hear Goguryeo's trumpet of victory. However, they are soon faced with an ambush.