Description: Simon and Liz were teenage friends who fell into a time hole and found themselves trapped in various periods of the 20th century, where they encounter all sorts of adventures. Many of them involve the nefarious Commander Traynor, who is also traveling in time. Teenagers Simon Randall and Liz Skinner discover a "time barrier" on a derelict naval base that hurls them back to 1940s war-torn Britain. Subsequent adventures find them twenty years into their own future caught up up in experiments being conducted in the Arctic, in an alternate reality where the eco-system is about to collapse, and back in the present day tangling with clones.