David Callaway attempts to piece his life together in the aftermath of the suicide of his wife and was abandoned to improve his nine-year-old daughter, Emily on their own. David are initially thrilled to find out that Emily has created an imaginary friend named'Charlie', however it isn't a long time before'Charlie' develops a menacing and violent negative, and as David struggles with his daughter's growing emotional problems, he comes into the terrifying realisation that'Charlie' isn't merely a figment of Emily's imagination.