During the Lincheng Earthquake, Liu Shuzhen lost her left arm while protecting her children. Her youngest child, Sanbao (also called A Su), went missing in the chaos. Her eldest and second sons swore that they would take good care of their mother in the future. However, more than twenty years later, the two sons broke their promise and even tried to drive Liu Shuzhen out of the house. Just at this moment, Sanbao (A Su)—who had grown up to become the president of Su Group—unexpectedly encountered his mother, who had been kicked out.