In a small, picturesque village in South Korea, the life of a young man named Seohyun takes an unexpected turn when his older sister marries and brings with her a problematic sister-in-law, Ha-eun. The latter, a newcomer from the city, seems to have a special knack for getting into trouble and unleashing chaos around her. From their very first encounter, Seohyun becomes caught in the emotional rollercoaster that Ha-eun creates, who, in turn, feels out of place in the village's traditional setting.
At first, their relationship is tense and full of misunderstandings, but as the story unfolds, Seohyun discovers that behind Ha-eun's extroverted and wild personality lies a brave and caring woman who is struggling to find her place in the world. Together, they face comical and often surreal situations, ranging from organizing a community event to a series of family mix-ups that test their limits.
Amidst laughter and tears, Seohyun and Ha-eun learn to accept their differences and discover unexpected mutual support. The film combines romance and comedy with a touch of drama, exploring family dynamics and the importance of finding one's own voice amidst the expectations of others. After all, sometimes the most complicated relationships are the ones that enrich our lives in unexpected ways.