Yang Jiadong, a police officer responsible for investigating the falling case, uses his keen insight and perseverance to look for clues in complex cases.However, what he never expected was that there was a more profound secret hidden behind this seemingly ordinary falling case.

During the investigation, Yang Jiadong discovered that there were inextricable connections between the deceased Tang Yijie and Jiang Zicheng, Lin Hui and Lian Ayun.Tang Yijie's death seems to have some unknown connection with these three people, making the whole case even more confusing.

However, as the investigation deepened, Yang Jiadong encountered a series of frame-ups, suspensions and even pursuits.These sudden difficulties made him more convinced that the car accident his father, who was also a policeman, encountered while investigating the disappearance of Lian Ayun five years ago was not a simple accident.

Yang Jiadong began to dig into his father's car accident case, trying to find a connection with Tang Yijie's falling case.He understood that in order to solve this mystery, he must first find out the truth about Lian Ayun's disappearance.

In the midst of difficulties and dangers, Yang Jiadong was not afraid of hardships and dangers and bravely pursued the truth.He investigates deeply, unearthing intrigues and secrets hidden beneath the surface.Every discovery brings him one step closer to the truth, and every challenge makes him firmer in his beliefs.

Yang Jiadong's efforts were not in vain, and he finally revealed the truth hidden in the darkness.It turned out that in order to cover up an ulterior secret, Jiang Zicheng, Lin Hui and Lian Ayun teamed up to frame Tang Yijie and attempted to eliminate all evidence.Father Yang's car accident is also inextricably linked to this secret.

After revealing the truth, Yang Jiadong successfully brought the criminals to justice and cleared his father's wrongdoing.He used wisdom and courage to defend justice and let the truth be exposed to the world.