The movie plot of The Wandering Swallow

Fang Hua, a aristocratic son, became a hotel waiter and met Mary, a hotel guest. Ballroom singer Mary was quite tired of singing and fell in love with Fang Hua. One night, Mary was humiliated by the dancer and depressed. She invited Fang Hua to her room to have a heart-to-heart talk. This matter was known by the hotel minister, and Fang Hua was fired for violating the hotel regulations. Governor Mary's affection began with herself, and the other party was extremely concerned, so he decided to give up the dance floor life and live with Kare wa. Soon, Mary became pregnant, but Fang Hua had no income and life became increasingly difficult. At this time, Lulu, the second daughter of manager Huang of foreign firm, wanted to find a tutor, and Fang Huaxing was hired. Manager Huang's eldest daughter, Ruth, fell in love with her married husband, Secretary Chen, and got married in secret, trying to use her marriage with Fang Hua as a cover. Mary was seriously ill after giving birth to her son and was in urgent need of medical expenses. Secretary Chen took the opportunity to threaten her, but Kare wa reluctantly agreed to this marriage. Mary learned that she was ill and went to the Huang family, leaving her son and leaving with tears. Ruth still kept in touch with Secretary Chen after her marriage, and Fang Hua had an argument with Secretary Chen, who fell to the ground and died in the chaos. After Fang Hua went to prison, Mary went to Ruth to get her son back and visited Fang Hua. After explanation, the two made up, and Mary was willing to reunite after Fang Hua was released from prison.