The crown prince Sehun of the South still remembers how he abandoned his possessed ex-lover three years ago. He moved on and never turned his back again. The moment he turned his back on that red-haired boy, he promised himself to never fall in love with the wrong person again. 

The young herbalist Luhan from the Northeast doesn't remember anything that happened three years ago. He doesn't even remember his birth name: Xiao Lu. He was just lucky that an old man saved him and gave him a chance to start a new life in his town. 

What will happen when the stubborn crown prince runs away from his kingdom and stumbles upon a runaway herbalist from the northeast town? The young herbalist who just happened to be his ex-lover...