In a peaceful South Korean city, young Min-jae leads a quiet life as a university student. However, his world takes an unexpected turn when his charismatic cousin, Soo-yeon, returns from studying abroad. The spark between them is undeniable, but there's a small detail: the family learns that the connection between cousins is not entirely accepted by cultural traditions. As Min-jae and Soo-yeon spend more time together, sharing secrets and desires, the tension between love and family begins to grow.
As they both grapple with their feelings, they decide to ignore conventions and enjoy their new bond. Summer unfolds with laughter, strolls, and confidences under the warm sun, but things take a dark turn as their relationship becomes more obvious to others. The pressure from family and society becomes palpable, and the cousins must face the difficult decision of following their hearts or fulfilling family expectations.
In an emotional climax, Min-jae and Soo-yeon are forced to reevaluate what love truly means in a context where tradition weighs more heavily than desire. This touching story combines romance, comedy, and family drama, prompting us to reflect on the ties that bind us and what we are willing to risk for love.