With the balcony window broken, An Xin warns her mother, Xin Ping, to keep little Hanhan away and never leave her home alone. While Hanhan naps, Xin Ping's gambling ex-husband demands cash, threatening to ruin An Xin's job if she refuses. Fearing what he'll do, she slips downstairs to pay him. That brief trip ends in tragedy when she watches her granddaughter fall from the building and land in front of her...