Amid a tense inheritance fight, a charming heir clashes with his hardworking employee who's known for her irresistible smile — which he cannot stand.

For an attorney who despises losing to men and an A-list actor who distrusts women, love means nothing — until they're forced to date each other.

Min Jae-Hee is a middle aged woman. She is a housewife who has devoted her life to her family, but her family gets destroyed. Min Jae-Hee is furious at the world. Through a mysterious perfume, Min Jae-Hee's appearance suddenly changes to a beautiful young woman. She becomes a model with her new youthful appearance. Min Jae-Hee meets Seo Yi-Do (Shin Sung-Rok). He is a successful fashion designer, but a mean spirited person.

Kang Dong-Goo dreams of becoming a movie director, but he is cynical due to bad luck. Cheon Joon-Ki wanted to follow in his father's footsteps and become an actor, but he is now just a minor actor. Bong-Doo-Sik came to Seoul to become a scenario writer, but things have not been easy for him. These 3 men run the guest house Waikiki in Itaewon, South Korea. Their guest house is facing bankruptcy and then a mysterious baby and single mother appear at Waikiki.

Story depicts love and success of a deliveryman who eventually becomes the CEO of a delivery app company.

A romantic story of two best friends who were friends for last 20 years but never realize they have been in love all the time.