Shen Qingwu, the female owner of an herbal medicine shop, accidentally rescues a mysterious, gravely wounded man named Xiao Che on a rainy night. Little does she know that he is the adopted son of Prince Jing and a young prince who commands the Northern Border's secret guards. A wooden token left behind by her father and a mysterious jade pendant bind their fates together. To uncover the truth behind the wrongful accusations against her father, they join forces and embark on a journey of escape and investigation, searching for a lost register and exposing a conspiracy hidden for many years. From mutual suspicion to risking their lives for each other, love quietly blossoms amid flashing blades and undercurrents of political intrigue. This time, can they clear the old injustice, protect each other, and find a true place to call home?