Mr. and Mrs. Ho are longing for a grandson. Their son, Ho Chieh and daughter-in-law, Wan Ping, come home from abroad. Wan Ching, the little sister-in-law, is a nurse and comes with Mrs. Ho to meet her sister. At the airport, old Mrs. Ho mistakenly hears that her daughter-in-law is pregnant. After that, Ho Chieh has to attend a business party. However, his wife is not free for it so he begs his little sister-in-law to go as his wife. Wan Ching turns out to be a hit with the guests. In order to please his mother, Chieh asks little sister-in-law to take Wan Ping to the hospital for a pregnancy test and get a false positive report. But through a mistake, Wan Ping gets the report of a sterile woman. She is saddened by it but everyone lies to the old people in order to spare them the disappointment...

The period musical shot in 1970 and original titled "四季花開", was banned by Taiwan after someone reported it was based on a mainland China film. The film was later re-titled and changed all the signing lyrics to be allowed to be screened in Taiwan once.