During a Thanksgiving dinner, professor Indiana Jones entertains his great-grandchildren by recalling a visit to China he made as a boy. While his father was working with the Chinese translator Yen Fu, young Indy, his mother and his tutor went sightseeing with their guide, Mr Li. After visiting the Great Wall of China, Indy fell ill during a rain storm and the travelers were taken in by a poor Chinese family. Dispite his mother's misgivings, she consented to have a local doctor treat her boy using acupuncture.