Chad announces that he is the new host of a celebrity prank show, causing the So Random! cast to become paranoid about who is going to be pranked, and which of their co-stars is in on the joke with Chad.

Lisa Kelly auditions to be the first woman to break into the elite Heavy Haul division by commanding a convoy of pilot cars while hauling 80-foot sections of wide-gauge pipe. Having spun out before with a much shorter load, she faces a daunting task involving a 600 mile run through the Brooks Range mountains, over the wind-blasted North Slope, and across the ice road of the Arctic Ocean itself. Hugh 'The Polar Bear' Rowland aims for an even bigger title--that of master of all of North American ice roads. But Hugh's archrival Alex Debogorski is matching him shift-for-shift. In an epic five hundred mile race that runs from the truck yards of Fairbanks to the shores of the Arctic Ocean, Hugh and Alex duel for North American bragging rights. Tim Freeman's goal is a more universal one--survival. He wants to finish his rookie season with his truck, and himself, in one piece.

Roxy's hope for a grand reopening of the Hump bar doesn't go off without a hitch. Pamela surprises her son's coach with her knowledge of football and quickly earns a job on the team. Joan wants to share one last moment with her daughter before her deployment to Iraq. Chase comes home early from his current deployment, but finds the hardest part will be adjusting to life back home at Fort Marshall.

Pressure Test Elimination - Sam, Poh, Chris and Andre had to cook a combination of panna cotta, passionfruit emulsion ('passionfruit slick') and filled macaroon biscuits.

Tiff and Jason take part in a tank 'dogfight'. Jonny test drives the the new Golf GTi. Tom and DJ Judge Jules try out the new Aston Martin DBS Volante. Tim looks at the state of the roads in the United Kingdom.

The Torchwood team are placed in mortal danger when they investigate a mysterious signal that is reaching out hypnotically to lure in vast groups of helpless children

Charlie develops a crush on Tatianna Caine, a girl he rescues while trying to recover stolen radioactive material. After Tatianna reveals a secret about herself, S.T.A.N. must rescue Aaron. Meanwhile, Emma enlists Jason to help run her campaign for class president.