The Department of the Time is a governmental autonomous and secret institution that depends directly on Presidency of Government. Since in the USA they guard the secrets and the key for a president's possible nuclear assault to president, the same thing happens with our Department: only kings, presidents and an exclusive number of persons know of him. The step about other epochs is realized across doors been vigilant over the Patrols of the Department. His aim: to detect and to prevent that any intruder of the past comes to our present - or vice versa - in order to use the History for his benefit. For it the Patrols will have to travel to the past and prevent them from achieving it.