Lau Mei-Shan

TV reporter Wei Haiyi (Played by Maggie Shao) interviews the cage house where the urban poor live, and meets the young Ma Zhongbao (Wen Zhaolun). Zhongbao grew up in a cage house since childhood, indulged in reading all day long, and his personality was extremely closed. After the interview, Haiyi inadvertently took away Zhongbao's novel "Frog and Scorpion", and was deeply impressed by Zhongbao's bitter pursuit. The highly reputable lawyer and lawmaker Cham Yourong (Luo Yingjun) is the underground lover of Haiyi's mother, Wei Jinling (Miao Jinfeng), but intends to invade Haiyi, and Haiyi kills him in a hurry. The mercenary Jin Ling accepted a huge bribe from Rong's wife and even testified against her daughter in court.

"Detective Investigation Files" revolves around the professional and meticulous investigations carried out by a group of dedicated police officers. As they delve into mysterious deaths with unclear causes, they tirelessly work towards maintaining peace and security for the people. However, their demanding job often comes at the expense of personal happiness. Cheung Dai Yong, a brilliant and astute police officer, has a track record of solving crucial cases. His trusted colleague, Lee Chung Yee, stands by his side, and together they tackle challenging and complex cases. Amidst their work, Dai Yong encounters Ko Jit, a tenacious journalist. Despite their initial conflicts, a deepening connection blossoms between them. However, Ko Jit already has a romantic partner.

WAI, an insurance agent, is protective of his daughter YEE after losing his wife. He dislikes her boyfriend and tries to break them apart. But YEE falls in love with WAI's partner, CHUNG, and they get married. WAI interferes in their life, while he falls for his boss, NAM. YEE and CHUNG consider divorce, but WAI and their friends try to save their marriage. WAI faces difficulties in his love life and regrets his behavior towards CHUNG.