When Jack Sheridan’s father was killed by the invaders in 1931, young Jack was adopted by his father’s wise and wealthy old friend, Chan Sing-Tan. Jack vowed to avenge his father’s death and swore never to rest until he had driven the invaders from the land of the peaceful Chinese, and to this end he trains himself to become a marvel in the sciences, the Hindu art of escape, boxing and jiu-jitsu, and ancient Chinese magic and illusion.