Eccentric and stern detective Cordelia Kapp is forced to quickly arrive at the White House to investigate a murder that took place during a formal dinner. Everyone who was present in the main residence of the country at that moment, including the president himself, immediately falls under suspicion. The investigation is complicated not only by the large number of guests and the size of the building, but also by the fact that practically everyone here has their own secret that they are not eager to share with anyone.