Four years ago, Emily Shea and Staff Sergeant Brett Leeds agreed to part with no strings attached. Sparks flew during their brief affair, but fate intervened, sending Brett overseas. When an unexpected pregnancy derailed Emily's own plans, her attempts to locate Brett were soon overwhelmed by the challenges of single motherhood. Now, Brett has returned home, and Emily is forced to share her secret.

Despite feeling betrayed, Brett is determined to forge a relationship with their son, Tyler. As the former lovers battle both their inner demons and their mutual desire, another presence enters their lives—Tyler's imaginary friend. Soon, however, the chilling evidence points to a different conclusion: a ghost has formed a dangerous connection with their son. Emily's attempts to help both a lost soul and a friend in need spiral toward a deadly confrontation, and Brett must race to save Emily before he loses her again—forever.