A young woman in her early twenties, still single and struggling with her own life, becomes reluctantly involved in her teenage sister’s secret and dangerous online relationship with an older, wealthy man. When her sister lies about her age to maintain the relationship, the responsibility unexpectedly falls on her to confront the situation. Alone at home one evening, she must face the man her sister has been deceiving—leading to a tense, uncomfortable encounter that forces her to protect her sister, confront deception, and navigate the murky line between responsibility and personal boundaries.