Su Qingwan, a time-travel orphan, was divorced by her husband. She took 500 taels to Luomapo, a border gate, to open Guihong Inn. She accidentally rescued Jun Wuxie, a man with a broken arm who was wanted in Zhenbei, and asked him to work to pay off his debts. Su Qingwan made money by doing business with delicious food and salt production using ancient methods. She used the inn to deal with the border troops, the imperial guards, and the foreign enemies in Beidi. In the end, she joined hands with the soldiers to guard the border crossing and lived a good life in ancient times.
