Presenter Alex Riley helps rookies Erin and Tom set their wheels spinning through a journey of cycling discovery. They are assessed by a leading sport scientist before attempting a stage of the Tour of Britain cycle race. The stage contains a punishing sprint and an arduous climb, but the rookies are flanked by Olympian Matt Stevens and police outriders to help them along the way! They then meet eleven-times World Championship-winning BMX racing cyclist Liam Phillips, who teaches them a few tricks of the trade. Finally they hit the velodrome to pit themselves against the clock on the terrifying slopes of the track!