The Beauty Inside

On his eighteenth birthday, Woo-jin wakes up to a face and body that aren't his own. He is shocked and confused by the drastic change in his reflection. He confronts his mother, who is shocked but tearfully accepts him for who he is.

Starting that day, Woo-jin discovers he wakes up in a different body every morning, regardless of age or nationality. The constant change shocks him, but he learns to cope with his new realities. Each morning he begins recording himself to keep track of who he was.

He develops a detailed system to adapt: a wardrobe of clothes, shoes for any body, and toiletries for different genders. He even uses a vision test and a foot-measuring device to ensure fit. This setup helps him stay functional when his body changes daily.

As a skilled furniture designer, Woo-jin runs his company ALX from home to avoid exposing his secret. His best friend Song-beck oversees sales and meets clients in person. The business thrives while his personal life remains hidden behind the changing bodies.

Woo-jin develops a crush on Yi-soo, a woman who works at a furniture store. He visits her every day in different bodies, hoping to approach her when he is handsome. She remains unaware of his changing identities.

He finally asks Yi-soo out on a date by presenting as his best possible self. To stay close, he goes several days without sleep to keep the same body for the date. After the date, he decides to stop contacting Yi-soo to avoid revealing his secret.

Woo-jin becomes a temp at Yi-soo's workplace and asks her to dinner. She hesitantly accepts and goes with the female Woo-jin to his house. There, he reveals who he is on the inside and explains his nightly transformations.

Yi-soo is shocked but slowly accepts Woo-jin for who he is. They devise a plan so that whenever Woo-jin grabs Yi-soo's hand, she will know it is him. The plan relies on physical contact as a signal across changing bodies.

Public gossip about Yi-soo dating different men strains her sanity. She starts relying on medication to cope with stress and insomnia. This pressure pushes Woo-jin to disappear from her life to protect her.

Time passes and Yi-soo tracks Woo-jin down in a different country, the Czech Republic. She confesses that she still loves him and wants to be with him. Their connection is renewed as she travels to find him.

Woo-jin proposes to Yi-soo and she accepts, reaffirming their commitment to make their relationship work despite his transformations. The moment marks a new chapter where love endures beyond changing bodies. They face the future together.

Woo-jin learns from his mother that his father had the same condition, which explains his father's departure. The revelation deepens their understanding of the genetic nature of the transformations. It also adds emotional gravity to Woo-jin's journey.