Modern special forces military doctor Shan Yiyi unexpectedly travels back to ancient times, becoming the fifth concubine-born daughter of the prime minister's estate, and is forced to marry Jing Yan, the Prince Ding heir who is falsely accused and faking a limp. On their wedding night, she is poisoned and unexpectedly awakens a lotus space with a spiritual spring and herb field. Together, they embark on a three-thousand-li journey of exile, repeatedly breaking through life-and-death crises, outwitting corrupt officials in the imperial court, thoroughly investigating their family's past grievances, and joining hands to protect the country, ultimately clearing their names and reaping a sincere, deep love that transcends time and space.