Yumi is a 30-year old, ordinary woman who struggles with expressing her feelings. Told from the perspective of the many brain cells in her head, she experiences growth in both her love life, her career, and finds happiness in the small joys of everyday life.
Starring Kim Go-eun, Lee Yu-bi, Mi Ram, Ahn Bo-hyun, Jinyoung, Joo Jong-hyuk, Kwon Seung-woo, Park Ji-hyun, Jung Soon-won, Sa Moon-young