An encounter with an anti-gravity machine catapults Peter Schock & Kate Dyer back to the 18th century & sets in motion a calamitous chain of events. While a massive police hunt gets underway to find the missing children in the 21st century
- in 1763 a hardened criminal the Tar Man steals the anti-gravity machine & disappears into the London underworld. Stranded in another time & forced to chase the Tar Man to his lair Peter & Kate find a friend & guide in reformed cutpurse Gideon Seymour. Gideon does every thing he can to help them but will his dark past catch up with him before the machine is recovered?