Good Morning Mother In Law

NG is a lousy, hot-tempered old lady. She has married SIN for years. They have two sons and two daughters, who have all married and moved out to live independently. Today, all are coming home to celebrate their father's birthday. However, the atmosphere at this family gathering is a bit uneasy. They all seem to be too unfamiliar with each other. While NG is busily packing for their trip to the USA. The bad news that SIN is killed in an accident arrives.