The one-way line is safe but there is no distance. Although I have never been hurt, I missed her (him) walking back to back. So I stood on the one-way line and all I could choose was to wait. There is a distance but not a long line. Although you can hold hands and choose love, you cannot hold her (him) in your chest face to face. Meng Xiao, a girl who strives to find true love, after losing her brother Yang Yifan, is not willing to be at the mercy of fate to look for and wait for the vow she once made. Until she meets Luo Qi by chance, they go through a series of emotional disputes that make each other doubt their lives. The sudden appearance of Peng Tao brings out many unknown secrets. Can they still be together...