Window of Love (1984)

Yeong-ho tries to keep his heart disease a secret from his wife but he becomes so depressed over his condition that he can no longer function at work and loses his job. To earn money, his wife takes a job with a family friend but Yeong-ho misinterprets his friend's act of kindness. He leaves home in a fury leaving his wife to discover the cause of his behavior and to begin a frantic search for him.