Because of the death of grandma, Cheung and his mother always argue. Cheung misses his grandma too much and becomes absent-minded at work. He is nearly fired. Cheung's mother gets into debt due to a failed speculative investment. She planned to make a profit and take Cheung's grandma to travel. Will Cheung and his mother be reconciled?張守行思念剛逝世的祖母，終日神不守舍，違反速遞公司守則，遭老闆兩番斥責，險遭辭退。張母誤信朋友之言，向銀行貸款，投機買股票賺錢。她遇上股災，損失慘重，遭收數公司討債。原來張母是為了實現守行的祖母希望旅行的心願，可惜事與願違。二人因祖母突然辭世，多番爭執而導致關係惡化......
