Yumi's Cells 3

• Original title : 유미의 세포들 시즌3
• Other title: 
• Number of episodes: 8
• Broadcast date: April 13, 2026
• Broadcaster: tvN, TVING
• Directed by Lee Sang-Yeob
• Screenwriter: Song Jae-Jung, Kim Kyung-Ran
• Genre: romance, comedy, everyday life
• Cast: Kim Go-eun, Kim Jae-won, Jun Suk-ho, Choi Daniel, Jo Hye-jung, Mi Ram, Park Se-in, Lee Yoo-bi, Sung Ji-ru, Jeon So-young

Adapted from the popular webtoon of the same name, “Yumi's Cells” recounts the daily life of Yumi, an ordinary office worker. But the drama's originality lies in the point of view of her brain cells, which each control her thoughts, emotions and reactions.

Yumi has now turned her life around. She has become a well-known author of romance novels, and has left behind her daily life as a salaried employee to devote herself fully to writing. While her career seems finally to be in line with her aspirations, her personal balance remains uncertain, as if her emotions have been put on hold. The arrival of Soon-rok, a methodical and reserved manager at her publishing house, disrupts this settled routine. This meeting, at the crossroads of reason and feelings, could well give new impetus to Yumi's life.

Teaser

Yumi has changed a lot. Now best-selling author, she seems to have found her calling professionally. Yet something is missing in her life. The teaser shows that the cell village, once lively and full of life, has become strangely quiet and deserted. Since the end of her last relationship, Yumi no longer feels the strong emotions that once punctuated her life.

She admits it herself with a certain sadness: «Nothing really gets to me anymore. The problem is that I don't have any problems.» Her daily life is peaceful, but it also seems monotonous and devoid of excitement.

The situation begins to change, however, when a new man appears on the scene. Yumi's encounter with Soon-rok, an editorial director played by Kim Jae-won, immediately causes a stir in the village of cells. Her heart begins to beat faster again, and her Love Cell—which had been dormant for a long time—opens its eyes once more.

But after a long period without a relationship, Yumi realizes that she has lost the habit of falling in love. A little unsettled, she humorously asks herself, «Remind me again how people start dating? It's been so long since I've felt like this... that feeling where my heart gets all soft and tender.»