Tang Lai-Man

Cheung Ka Shing, an inventor who participates in illegal road races in his spare time. Their relationship blossoms into romance, but when Kitty's father goes into hiding and leaves behind over ten million dollars in unpaid debt, she leaves Hong Kong without telling Shing where she's going. Shortly thereafter, Shing strikes it rich when he is paid ten million dollars by a Japanese computer firm for a chip he has invented, but money does little to relieve his aching despair in Kitty's absence.

"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.