Taeho, a talented perfumer, has been dating Sunhye for seven years. Although they still care about each other, Taeho feels that their relationship has fallen into a routine and desperately needs a change.
One day, his best friend accidentally spills a mysterious new perfume on Taeho. That night, Taeho notices something unusual about Sunhye’s reaction to the scent. Intrigued by its strange effects, he begins wondering just how powerful this new creation might be.
Consumed by curiosity and complicated feelings, Taeho makes an unexpected request to his best friend:
“I want you… to get closer to her.”
What starts as a risky experiment soon threatens to turn their long relationship upside down.