In this intense story of love and revenge, Sarah is a divorced mother trying to rebuild her life after a painful breakup. When her ex-husband, John, gets engaged to the charming young divorcee Tessa, Sarah feels her world collapsing. Tessa's arrival brings frustration and jealousy for Sarah, who quickly becomes an overprotective mother, willing to do whatever it takes to protect her daughter from the potential harm this new woman might bring into their lives.
As tensions rise, Sarah begins to unravel Tessa's dark past, filling her mind with thoughts of revenge. Her personal challenge turns into an obsession, and her increasingly desperate strategies lead her to cross ethical boundaries. With each new secret she uncovers about Tessa, Sarah plunges deeper into a dangerous game that jeopardizes her mental health and her relationship with her daughter.
The atmosphere becomes more chilling as their encounters grow more direct and disturbing, revealing the complexity of their personalities and the dark paths both have taken. The struggle for love and custody soon transforms into a terrifying duel, pushing both characters to the brink of what they are willing to sacrifice. The story unfolds amidst unexpected twists and escalating tension, questioning how far a mother will go to keep what she loves.