Bo-yeong and Haewon have been navigating the intricacies of their relationship for a decade, ever since they first met in university. Throughout the years, they have stood by each other, offering unwavering support and companionship. However, their relationship has begun to show signs of strain, prompting them to reevaluate their connection. Despite believing they knew each other intimately after ten years together, they are coming to realize that the passage of time has created a growing chasm in their understanding of one another.