In this quick-transmigration story set in the Qing Dynasty, Yao Jiahxin, a leftover woman, is reborn as an aging, sickly imperial concubine. At 28, she's past the age of vying for the emperor's favor and decides to enjoy a peaceful retirement. However, she soon discovers that the Emperor, the Yongzheng Emperor, is actually reborn! Fearing exposure, she tries to maintain her low profile. The reborn emperor, who ascended the throne thirteen years early, suffers from insomnia. He unexpectedly finds solace in the concubine, who turns out to be his 'sleeping pill'. This is a sweet romance where the protagonist seeks enjoyment and relaxation, not power.