The Summoned follows the lives of two successful couples, Jack and Lydia, and Mark and Rachel. Jack and Lydia are a power couple in the corporate world, while Mark and Rachel have found success in the entertainment industry. Both couples appear to have everything they could want in life, but are struggling to maintain their relationships and happiness.
One day, they receive invitations to an exclusive self-help retreat in the mountains. The invitation promises to help them achieve their deepest desires and reconnect with their true selves. Upon arrival, they meet the mysterious and charismatic retreat leader, who reveals that the land they are on was once owned by their ancestors, who sold their souls to achieve success.
As the couples delve deeper into the teachings of the retreat, strange things begin to happen. They are plagued by nightmares, visions, and ghostly encounters. It becomes clear that they have unwittingly opened a portal to the afterlife, and their ancestors are looking to collect the debt owed.
As the couples struggle to survive the haunting, they are forced to confront the true cost of success. Will they be able to break the curse and emerge from the retreat unscathed? Or will they be forever bound by the actions of their ancestors?