In this intense and chilling story, we follow a family trying to rebuild their lives after a tragedy. When the mother, Susan, introduces her new boyfriend, David, the atmosphere seems to improve, filled with promises and renewed dreams. David, a charismatic and charming man, integrates into the family's life surprisingly quickly, winning the heart of Susan and, initially, that of her teenage son, Michael.
However, as time goes by, Michael begins to notice certain strange behaviors in David. From his obsession with a perfect family to unsettling episodes of aggression disguised as care, the mask of the good stepfather starts to crack. Despite the warnings from his friends, Michael feels compelled to investigate David's past, uncovering dark secrets that link him to other destroyed families. With each revelation, the tension escalates and danger feels imminent.
As David becomes an increasingly menacing figure, Michael must confront not only his own distrust but also protect his mother and sister from a man who, on the surface, only seeks a home, but who is actually a predator on the hunt for his next prey. In a deadly game of wits and survival, Michael must find a way to dismantle the life that David has built before it is too late.