This is a beautiful and sad love story. The heroine An Ran suffers from mental illness. On the plane returning home, she meets Lin Mo, a psychiatrist. The two like-minded people secretly fall in love. The two agreed to tell each other their feelings in the first snow, but Lin Mo broke the promise and left without saying goodbye. After that, An Ran closed her heart. Although Xiao Yi appeared around her and pursued her, An Ran always missed Lin Mo in her heart. Four years later, when An Ran was working at K Group, the two met again. Lin Mo was no longer a psychiatrist but the heir of K Group. Facing the familiar yet unfamiliar Lin Mo, An Ran hesitated about this relationship. She only wanted an answer...