Laura decides to reopen the old orphanage where she grew up, with the intention of turning it into a home for disabled children. Along with her husband Carlos and their adopted son Simón, she returns to the seemingly idyllic coastal property. Simón, who has a rich imagination and several imaginary friends, quickly makes a new invisible friend, Tomás. As Laura prepares for the reopening, Simón's behavior becomes more erratic and disturbing, leading to tensions within the family. The situation takes a dark turn during the orphanage's opening party, where Simón disappears under mysterious circumstances, leaving Laura distraught and desperate to find her son.

In her quest to uncover the truth about her son's disappearance, Laura delves deeper into the orphanage's past, uncovering long-buried secrets. Her investigation leads her to confront unsettling facts about the home's history and the fate of its former residents. As supernatural occurrences escalate, Laura's resolve is tested, pushing her to the edge of sanity. She becomes ensnared in a chilling mystery, where her love for her son drives her to extreme measures, blurring the lines between reality and the supernatural in her fight to uncover the truth.