Three decades ago, Gu Ran found an injured man lying outside the wall of the Qiangdu country. She just came back from her journey and coincidentally found him. Being a merciful and compassionate person, she brought the man inside their village despite the strict rule of the country not to allow outsiders without undergoing proper process.
When her father found out about the man, Gu Ran neglected his instruction to throw him out of the country. She insisted on treating him and compromised that she would ask him to leave once he is awake and able. Although reluctant, her father agreed but he should be well guarded.
But when the man woke up, he cannot remember his own identity. Gu Ran begged her father to let the man stay. That's when they realized that Gu Ran already fallen in love with the outsider. As a solution, her father accepted the man as one of their own and they got married. But one day the man disappeared along with Gu Ran.