The Real Reason for the Breakup: Throughout the early episodes, viewers wonder why Yong-pil and Sam-dal broke up eight years prior despite clearly loving each other. It is revealed that Yong-pil’s father, Sang-tae, blamed Sam-dal’s mother, Ko Mi-ja, for his wife’s death. On the day of the tragedy, Ko Mi-ja insisted on diving despite poor weather warnings; Yong-pil's mother accompanied her to keep her safe and ended up drowning. Devastated, Sang-tae forced Sam-dal to break up with Yong-pil, threatening to torment her mother with guilt forever if she stayed with his son. Yong-pil knew this and silently endured the heartbreak to protect both Sam-dal and her mother.
The Downfall of Bang Eun-ju: In Seoul, Sam-dal’s assistant, Bang Eun-ju, falsely accused Sam-dal of driving her to a suicide attempt through workplace abuse. In reality, Eun-ju was an untalented, dishonest assistant who stole Sam-dal’s concepts and framed her to cover up her own shortcomings. In Episode 15, Eun-ju’s corruption is exposed when corporate sponsors discover she took bribes and plagiarized concept files, completely exonerating Sam-dal.
Sang-tae’s Reconciliation: The emotional climax occurs when Sang-tae realizes that Ko Mi-ja has spent twenty years living in silent agony, wearing the red diving scarf in penance, while Yong-pil has sacrificed his personal happiness to appease his father's grief. Seeing his son’s willingness to love Sam-dal unconditionally, Sang-tae finally releases his resentment, visits his wife's memorial sea cliff, and grants his blessing.
Finale Resolution: Sam-dal re-establishes her career on her own terms, holding a photo exhibition featuring the genuine faces of Samdal-ri. With Sam-dal's full encouragement, Yong-pil moves to Switzerland for two years to work at the World Meteorological Organization. The series ends two years later: Yong-pil returns to Seoul, where he and Sam-dal remain happily together, surrounded by their supportive family and friends.