Jerry, a withdrawn boy living with his neglectful mother in a dilapidated apartment, spends his weekends alone in his room crafting model figurines and watching television. While investigating a stain on his bedroom wall, he discovers a strange alien opening hidden behind the plaster. He becomes increasingly preoccupied with exploring this creature in his room, and eventually has a sexual encounter with it. The creature becomes pregnant, and Jerry, overwhelmed with panic and guilt, tries to terminate the pregnancy, resulting in a traumatic event that deeply affects both him and his mother.