S01E01 The Wrong End of Time - Pt 1
The year is 1970. A young girl called Sarah is walking along the boundary of a disused naval base in St. Oswald beyond a sign which clearly says "Ministry of Defence. Keep Out" She stops...
Simon and Liz enter the lobby of the Ice Box. Simon hands Liz a survival suit and tells her to put it on. In the Computer Room Beth indicates that the temperature is now normal again. Dr. Bukov notes it is another breakdown in the standard procedures of the base's systems. Beth is now also curious as to the cause.
Simon Randall and Liz Skinner discover the existence of a strange anomaly, known as the “Time Barrier”, that enables them to travel in time to different historical periods in alternate pasts and futures.