Alan was a adopted son of Lung Yat Fu who was a key person of Taiwan triad societies. Once, Lung Yat Fu was attacked by some enemies. In the hospital, Alan met a nurse Monica Shum, she donated blood to save Lung Yat Fu, but he became handicapped. Alan was chosen to be successor by his father, this made his brother Simon decided to seize the leadership from Alan. Simon ordered Leon to assassinate Alan.