Li Ren (played by Andy Lau) lost both his parents when he was young and grew up in an orphanage in Thailand. When he grew up, Li Ren joined the Thai Air Force. At this time, he was still brooding over the death of his parents. It turned out that when Li Ren was 9 years old, his parents brought him to Thailand with a batch of important information and items. Unexpectedly, his father's sworn brother killed his parents for profit. One day, Li Ren had a relationship with his enemy's mistress Mona (played by Rosamund Kwan), and was hunted by the killer. Li Ren had no choice but to flee to the United States to seek help from the CIA. In the United States, Li Ren accidentally saved his enemy's daughter Chrystal (played by Jacklyn Wu), and the two fell in love. Love, family and hatred are intertwined, where should Li Ren go?