As Min-ji celebrated her 18th birthday, her family was buzzing with excitement. Her brother Joon and Hye-seok were planning a grand family dinner to mark the occasion. But amidst the preparations, Min-ji began to notice subtle changes in her brother's behavior. Joon seemed distant, often preoccupied with his phone and less engaged with the family.

Min-ji's intuition led her to suspect that something was amiss. She confided in Hye-seok, who seemed evasive and distressed. It wasn't long before Min-ji discovered the truth. Joon had been involved in an affair, and Hye-seok was on the verge of leaving him.

Over the next several months, the family navigated the complexities of relationship counseling, sibling guilt, and the process of healing. Min-ji learned a lot about the imperfections of her family and the strength of their bonds.