Kim Sun-woo is an enforcer and manager for a hotel owned by a cold, calculative crime boss, Kang who assigns Sun-woo to a simple errand while he is away on a business trip; to shadow his young mistress, Hee-soo, for fear that she may be cheating on him with a younger man with the mandate that he must kill them both if he discovers their affair.
"A Bittersweet Life" — movie produced in South Korea and released in 2005. It has a great rating on IMDb: 7.5 stars out of 10. It is a feature-length film with a runtime of 1h 59min. "A Bittersweet Life" is currently available to stream on Amazon Prime and Shudder and for rent and to buy on Apple TV and YouTube Movies. Click on a playlink to watch it now!