Dayu'er is a Khorchin Mongol princess who is deeply in love with Dorgon- one of the several sons of Nurhaci, a Jurchen chieftain.

Hong Taiji is already married to Dayu'er's aunt Jerjer to secure the alliance between the Khorchin Mongols and Later Jin.

Hong Taiji initially has feelings for Dayu'er, but realizes that she only loves Dorgon, so he directs his affections to her sister, Harjol.

After Hong Taiji's death, Dayu'er son Fulin becomes Emperor and is assisted by Dorgon.

However, Fulin is disillusioned with life after his true love Consort Donggo dies.