In each episode, five celebrities undertake various challenges in a brand-new genre of family adventure gameshow. When the doors of District Z open in the middle of the night, the game starts. Before the sun rises, the candidates must overcome numerous physical and mental challenges while facing creatures controlled by the mysterious Professor Z. At stake : a treasure kept in a vault. However, if the candidates don’t finish the game in time, the doors will close on them forever. Thanks to embedded cameras and unprecedented shooting techniques, the show offers a unique perspective for the viewers.