Set in the fictional, gossipy seaside neighborhood of Ongsan, the story follows Dong-baek, a resilient single mother who moves to town and opens a cozy bar-restaurant named Camellia. As an orphan abandoned by her own mother and carrying the heavy societal stigma of raising her son, Gu-pil-gu, out of wedlock, Dong-baek is an easy target for the judgmental local matrons. Despite facing constant ostracization and the lingering trauma of her past, she maintains a gentle, enduring spirit. Her quiet life takes a chaotic turn when Hwang Yong-sik, a fiercely loyal and righteous local police officer, falls hopelessly and publicly in love with her at first sight. Yong-sik’s aggressive affection and unwavering public support gradually break down Dong-baek’s defensive walls, inspiring her to finally stand up for herself against the town’s petty bullying. However, the burgeoning romance is overshadowed by a sinister shadow. A notorious local serial killer, known by the moniker "Joker," has been terrorizing Ongsan, and Dong-baek suddenly finds herself targeted as the killer's next intended victim. Throughout the community, cryptic warnings and threatening graffiti appear, turning everyday neighbors into chilling suspects and plunging the town into a state of intense paranoia. Yong-sik becomes fiercely determined to unmask the killer and protect the woman he loves, utilizing his investigative instincts to sift through false leads, psychological torment, and mounting danger. Meanwhile, Dong-baek’s estranged
biological mother unexpectedly returns into her life under heartbreaking circumstances, offering a complex redemption arc that forces Dong-baek to confront the deepest wounds of her childhood. Complicating matters further is the reappearance of Pil-gu’s biological father, a famous
baseball player who regrets walking away and attempts to reenter their lives, triggering a fierce rivalry with the devoted Yong-sik. As the net tightens around the elusive Joker, the narrative skillfully weaves a tense murder mystery with a heartwarming romantic comedy. The ultimate climax exposes the killer’s identity in a thrilling confrontation that tests the limits of community solidarity and personal courage. In the end, Dong-baek breaks free from the generational cycle of abandonment and fear, reclaiming her autonomy, securing her fiercely protected happiness with Yong-sik, and transforming from a timid outcast into the proud, empowered matriarch of her own destiny in Ongsan.