"Plum Blossom Brand" tells the poignant love story between Yinshuang and Haozhen.

In order to have a son, Fu Jin Xueru of Prince Shuo replaced his newborn daughter with the son he bought, but in order to have a future with each other, he put a plum blossom mark on his daughter's shoulder. This daughter was sold to a well-meaning singing couple Adopted, named Yinshuang, and the son who stole the dragon and transformed was Haozhen.

After Yinshuang and Haozhen met when they grew up, they were deeply attracted to each other. Even though Haozhen married the princess whom the emperor granted marriage to, he would not sleep with her. Later, Xueru found out about Haozhen. Yinshuang's concerns brought Yinshuang closer to the palace, and then Yinshuang became pregnant, which was recognized by the whole palace.

Haozhen’s original princess wife became jealous and deliberately made Yinshuang fall down to cause a miscarriage. She also fabricated the lie that Yinshuang was a white fox. In order to prove that Yinshuang was a person who had stolen a dragon and turned into a Feng's matter was also uncovered, and because of this matter, Wang Ye, Fujin and Haozhen were all sentenced to death.

However, Yinshuang held the belief that she would follow each other in life and death. The princess asked the emperor for an imperial edict to pardon Prince Shuo's palace. Haozhen rushed back to the palace from the execution site but it was too late. In the end, He left the palace with Yinshuang.