As the trio spends more time together, the tension escalates. Soo-Ho and Hyun-Seo's unresolved feelings resurface, leading to emotional confrontations. Kei's growing affection for Hyun-Seo complicates matters further. Flashbacks reveal more about the ex-couple's relationship, including Hyun-Seo's sacrifices and the misunderstandings that led to their split. Soo-Ho and Hyun-Seo must confront their past to move forward.