Twelve years ago, the young love in Eyun High School came to an abrupt end due to cruel reality. Introverted school girl Jiang Xiaohan mustered up the courage to hand over a love letter, but was met with a cold rejection by her senior Gu Zeyu - at that time, he was deeply trapped in the haze of his parents' divorce and mother's suicide, and was unable to respond to the girl's feelings. Soon after, a rainy night chaos caused by Jiang Xiaohan's bullying took the life of her best friend Du Xiaoyu. Gu Zeyu left a permanent scar on his left hand to save her. Carrying the guilt and pain that he could not let go of, Jiang Xiaohan fled his homeland in a hurry, without any news. Twelve years later, the thread of fate was quietly reconnected. Due to his father's illness, Jiang Xiaohan returned to Eyun City and was admitted to the archives office of a certain bureau, seeking a stable job to escape reality. Gu Zeyu, who had successfully started his own business and had a good reputation outside, was shocked to hear the news of her return, so he resolutely transferred the company and returned to his hometown with his mother who had emerged from the gloom and was enjoying her old age. The fire of love in his heart that has never been extinguished drove him to take the initiative to approach, using his meticulous care and carefully crafted "accidental encounters" to try to melt Jiang Xiaohan's dusty heart.
Reunion tears open old scars. Jiang Xiaohan's inner love for Gu Zeyu has never disappeared, but the death of her friend and the rejection were like heavy shackles, making her build a wall in her heart, but she could not open her heart even though they were on blind dates every day. With his incomparable patience and sense of responsibility, Gu Zeyu gradually dispelled the haze in her heart, resisted the entanglement of the girl next door, and protected her from the wind and rain with his strong arms. In the end, he led her to face her deepest self-blame, and stood hand in hand in front of Du Xiaoyu's grave, gaining the understanding and blessings of Xiaoyu's parents. The scars that spanned ten years were healed by love and courage, and the two finally got married.