When the mysterious map given to him by his eccentric Uncle Patrick sweeps Freddie into another astonishing time-travelling adventure, he finds himself in 17th Century London during the time of famed diarist Samuel Pepys, the Plague ? and the Fire. Join Freddie, Connor and Ruby on another danger-filled adventure through time. Can they escape a ruthless, cut-throat gang and outwit the formidable Collector as the city burns around them?