Shen Qingyi accidentally rescued Prince Jing Xiao Jingheng who was seriously injured, but was designed by her father to marry into Prince Jing's palace in place of her eldest sister Shen Miaoyin, and became the titular Princess Jing. Xiao Jingheng was cold and alienated from Shen Qingyi due to his hidden illness. Shen Qingyi used modern medical skills to gain a foothold in the palace and gradually discovered Xiao Jingheng's real dilemma. After the two experienced a series of events together, they gradually eliminated their misunderstandings and developed feelings. At the same time, Shen Qingyi also used his medical skills to help Xiao Jingheng fight against the conspiracy of the powerful officials in the DPRK. In the end, the two joined hands to protect the beam and gained true love.
