Use Me as Bait to Lure Him into Prison

With his family broken and his dream of studying abroad shattered, Bai Ran was forced to return to China. My sister fell to death, and the diary pointed out that undercover detective Song Yi was the culprit. She was getting closer to revenge step by step, but she was shaken by the fact that he repeatedly sacrificed his life to protect her. The truth turned around, her sister did not commit suicide, the cause of death of her biological parents was hidden, and she couldn't believe the man behind it. The two join hands to chase the murderer, get involved in conspiracy and misunderstandings, and express their affection to each other on the edge of life and death.