"The Other Side of the Door" is a horror film that follows a grieving mother, Maria, who struggles with the death of her son, Oliver. After discovering a way to communicate with him from the afterlife, she is drawn into a dangerous ritual that takes place at an ancient Hindu temple. As Maria attempts to say goodbye, she inadvertently unleashes dark forces that threaten her family. The film explores themes of loss, grief, and the consequences of tampering with the unknown, ultimately leading to a chilling climax that tests the limits of love and sacrifice.