The Random Harvest (1960)

On his way to Lin'an, Lee Tsi-wan survives an attempt on his life by an employee but loses his memory. Maid Siu Yuet-mui of the Sek family comes to the help of the distressed. Lady Sek marries Siu to Lee to vanquish her husband's licentious interest in the maid. The loving couple raises a daughter Siu-fa. A few years later, Wan is hit on the head away at work and regains his memory. The homesick traveller returns to his native home, leaving behind Siu and daughter. The mother and daughter look for the missing man but he hasn't the faintest idea who they are. Apprehended by the incident, Siu plunges into depression. One day, Lee passes by the stone house where the couple used to live in and recalls past episodes of his marriage. The family is happily reunited.