Ten years ago, Wu lost his one-year-old son, kidnapped in his own house during the night. Convinced that his son was sold to another family, Wu does not give up hope. When the Chinese authorities' indifference becomes insufferable, Wu decides to take matters into his own hands and sets out on a journey across China on his bicycle, determined not to stop his search until he finds his son. After ten years of searching, his quest seems crazier than ever.
An intimate and deeply moving portrait of this orphaned father, this documentary also highlights the surprising and contrasting reactions of Chinese society to a phenomenon that is by no means marginal.