Returning home to visit her parents, Sana and her husband find themselves alone at the house while her in-laws are away on a trip. Sana grows increasingly uncomfortable with her brother-in-law's persistent, unsettling behavior. Ignoring her unease, he continues to secretly watch her. One night, when her husband is unexpectedly forced to leave, Sana is left completely alone with her brother-in-law. Becoming aware of his gaze while bathing, she soon finds herself attacked by him in her husband's absence. The mounting fear and tension deepen the unfolding story.