Scott has not left his house since causing the accident that killed his mother. To keep himself from harming his remaining loved ones, he repeats daily rituals and abides by superstitious, compulsive, and intrusive thoughts. He is successful in the endeavor until the night of his eighteenth birthday when something comes to tear him from the physical and mental walls he has built against the world. Something that Scott fears has been sent by his mother to avenge her death. Scott is not the only one in danger. The lives of his close friends and neighbors are threatened by this supernatural family struggle. To save them, Scott will have to find the strength to survive even though he has already lost the will to live. 

Come Out & Play is riddled with supernatural gore, scares, suspense, and mystery, but the thesis of the novel is to depict the horrors of living through untreated trauma, while also showing how trauma can be survived. Each character is struggling with their own unsolved issues (mental illness, loss, PTSD), which are reflected in the physical situations throughout the story.