"My left hand" tells the story: forty years ago, a pair of newborn "posthumous" twin sisters were poor mother abandoned in the hospital. After 40 years, inherited a large estate sister to sister is mother to sleep, exceeding one's expectations is, she didn't find her sister, but to find a mother and six brothers and sisters, and countless rushed her money from people magazine. Tracing the process of 178 days of whirling, touch one deeply in the heart, and poverty is hard to meet his sister. When one family over money and family or even misunderstanding finally reunited, they found that, in fact, the twins have been living in the distance of 300 meters away, because the status and rights of the barrier, pass many times when the family reunion of the moment. Through all kinds of hardships, the people involved understand the affection of the important, one family finally reunited.