Synopsis："Chan Tan (by Aaron Kwok), a private detective in Thailand, travelled to Malaysia following the clues in a photo. There he looked for a man called Chai (by Chan Koon Tai), who might help reveal the truth behind the murder of his parents 30 years ago. Chai’s adopted daughter Zi-wei (by Jiang Yi Yan) was an orphan of Chinese descent. Under Zi-wei’s guidance, Chan finally found Chai. But Chai said the man in the photo, Pang, a drug dealer, died quite some time ago. Meanwhile, Chan was informed that his home was ransacked. Chan then rushed back to Thailand. Back home, Chan found a secret compartment under his bed. But it was empty. He suspected what was once stashed there might have something to do with his parents’ death. He could do nothing but seek help from a Malaysian private detective. Chan found Zheng Fong-hei (by Nick Cheung), a Malaysian detective born in China.