21-year-old Aarna suffers from repetitive, debilitating nightmares about her mother who committed suicide fifteen years ago. When her father commands her to shift to Mumbai, from her grandparent's home in Chennai, to be under his direct control, Aarna revolts. Not only does she hate the prospect of facing her stepmother, but she also despises her father's interference in her life. A reluctant Aarna returns to Mumbai after fifteen years. Intrigued by her childhood, of which she has lost all memory of, she embarks on a quest to find out the reason behind her mother's suicide. Little did she know that she must let sleeping dogs lie.