Hot Rain (1993)

Hee-ran is married to a very rich man but but can't handle the discrepancy between their families. She remarries the man who saved her father from bankruptcy, but also leaves him for his jealousy and debauchery. She moves to Japan, and pretends she's married to Yang, a mentally handicapped man. Working as a nightclub hostess, she's hopeful again when Yukawa shows interest in her. What will she do when his wife makes a proposal?