Season 1 of My Happy Ending premiered on December 30, 2023.

Seo Jae-won has near perfect personal and work lives. She is the CEO of a successful furniture company and is a social media influencer with over a million followers. She scouts designer Yoon Teo to become the general manager of design at her company. In her personal life, Jae-won has a beloved husband, Heo Soon-young, and their lovely child. Soon-young is warm-hearted and hardly ever bursts out in an anger. After their marriage, Soon-young prioritizes his family over everything else.