A seemingly sweet and charming boy has just been adopted by a family in a quiet suburb. However, behind that innocent facade lies a small psychopath who is not only seeking love and attention but has developed a dangerous obsession with eliminating those he sees as a threat to his new life and happiness.
From the very beginning, things start to get complicated. As the family attempts to adjust to their new member, strange "coincidences" begin to occur around them. Initially, they are small incidents: pets that go missing, unfortunate accidents that leave the adults in confusion and surprise. But what begins as minor pranks soon escalates into a series of unsettling events that lead to a chilling conclusion.
The mother, in particular, increasingly feels insecure about her new son. Her maternal instincts alert her that there is something very dark behind those child's eyes, an unsettling mix of tenderness and malice. Through a series of unexpected twists, secrets from Mikey's past are revealed, putting the family dynamic and the concept of the true nature of good and evil to the test.
In the struggle for control and survival, the family must confront the terrifying reality: sometimes, the sweetest smiles hide the most sinister secrets.