A young boy's rescue buried a life-long bond between the two. When he was young, the male protagonist was unexpectedly in danger and was saved by the gentle and kind-hearted female protagonist. This short-lived but profound warmth became the most precious obsession in his heart, and he has never forgotten it for many years.
Time passed and the two entered the same junior high school, and fate made them meet again. The boy and girl met each other by chance, lost their childhood ignorance, and slowly got closer over the years of being together day and night. They got to know each other, and their love gradually grew. In the pure and beautiful time of youth, they carefully guarded this young and sincere love, and became the most dazzling light in each other's youth.
Everyone thought that they would pass the college entrance examination hand in hand and rush to a future that belongs to each other. But in the midsummer after the college entrance examination, there was no farewell or explanation. The heroine disappeared completely and quietly as if she had evaporated from the world.
The sudden separation shattered all expectations. The male protagonist never gave up. With his heart full of care, confusion and obsession, he traveled all over the world to search hard. He stayed alone for four full years. Four years of desolation, his thoughts never stopped, and he was always waiting for the missing person to return.
After four years of separation, the two finally reunited, but they had long since faded away from their youthful appearance and were running on the battlefield of their respective lives. The gentle girl in the past has transformed into a calm and meticulous criminal psychologist, who professionally analyzes the darkness of human nature and solves criminal mysteries; the once innocent young man has grown into a resolute and courageous special police officer, wearing glory and guarding peace and justice.
The childhood love of the past was separated by four blank years, mixed with the unsolved mystery of separation. After that, they met again because of the case and fought side by side at the dangerous criminal investigation scene. In the process of breaking the situation side by side and facing the darkness time and time again, they unraveled the truth of their separation and allowed the love that had been buried for several years to take root again across the estrangement of years.
Purpose: The two walk on the front line of dangerous crimes and witness the darkness of human nature. The tender feelings retained in their youth become the foundation to fight against the darkness, and they heal the pain of human nature with love.