In a bustling neighborhood of Seoul, two sisters, Soo-Jin and Min-Ji, lead seemingly distinct and separate lives. Soo-Jin, the eldest, is a conservative young woman focused on her career and upholding the family image. Min-Ji, on the other hand, is a free-spirited and rebellious artist who challenges social norms with her carefree and bohemian lifestyle. Although they grew up together, the differences between them have widened over time, creating an emotional rift that even family traditions cannot mend.
One day, while exploring a local market, they come across an ancient card game that promises to offer players profound insights into their hidden desires and darkest secrets. Driven by curiosity, they agree to play, unaware that each card they draw reveals aspects of their lives they would rather keep in the shadows. As they immerse themselves in the experience, the trust between the sisters begins to crumble, exposing buried resentments and ignored dreams.
With the help of new friends and unexpected situations, Soo-Jin and Min-Ji are forced to confront not only their differences but also the expectations that have kept them apart. Through a fun and tumultuous journey of self-discovery, they will learn that sibling love can be complicated, but it is also the path to reconciliation and understanding.