Chevie returns to modern-day London after her time-trip to the Victorian era, and finds the present much changed. Chevie's memories return to her in bits, and, as she learns about the WARP program, time machine inventor Professor Charles Smart is killed by police. They come after Chevie, too, and she escapes to the past. She finds Riley, and together they resolve to find the mysterious Colonel Clayton Box and prevent him from launching missiles at...