Gu Yanzhou returns to the modern world from a dynasty a thousand years in the past, only to find that Empress Xiao Mingzhao has crossed through time to seek him out. The two share a ten-year entangled past, filled with tender memories but also wounds that can never be healed. Their former love has long since fallen to pieces. Unable to let go, Xiao Mingzhao still hopes to rekindle their old relationship, but Gu Yanzhou refuses to remain trapped in the past and firmly refuses to turn back. Cheng Zhiwei, an archaeological researcher, understands his experiences and quietly offers him companionship and support. Xiao Mingzhao finally accepts reality and chooses to return to her own era. Gu Yanzhou lets go of the burdens of love and hatred from a thousand years ago, bids farewell to the past, and wholeheartedly embraces the life that belongs to him in the present.