In the early 70s, Canadian Jan Wong was studying at Beijing University when a young stranger, Yin Luoyi, asked for help in getting to the United States. Wong, then a starry-eyed Maoist, immediately reported Yin to the authorities. Thirty-three years on, Wong revisits the Chinese capital to begin her search for the person who has haunted her conscience; to apologize, to somehow make amends, and at the very least, to discover whether Yin survived.