Yoon Jae-sung , a failed, suicidal actor at the same bathhouse, impulsively swaps locker keys with the unconscious hitman.

is a hit 2016 South Korean action-comedy about a ruthless assassin and a struggling actor who accidentally swap identities. The title is a clever pun on "Lucky" and the "Key" to a bathhouse locker that sets the plot in motion. 📽️ Essential Plot & Characters

The story kicks off when , a perfectionist hitman, slips on a bar of soap in a public bathhouse and develops amnesia.

Jae-sung enjoys a sudden life of luxury, while Hyung-wook, believing he is a penniless actor, uses his natural "killer" instincts to become a breakout action movie star.

As Hyung-wook’s memory returns, he must reconcile his new life as a beloved actor with his dark past—only to discover that he might not be the cold-blooded killer he thought he was. 🎬 Quick Guide to Watching Movie Monday – Luck-Key (2016)