A nostalgic review of the last three years of the series, with Anneka Rice recalling some of the highlights - including the group of disabled people who learned to ski in two days - and some of the disasters - such as when the entire camera crew fell out of the back of the buggy. She also looks back to one of her most memorable tasks: in 1990 she was challenged to restore an orphanage in Romania. Within a week she had to transform it into a proper home for 600 children. Tonight she finds out how the children's lives have been changed since the team visited.
The return of the series which sets out to make the impossible possible. This week Anneka ends up in the mud - and a lot worse - as she takes an army of volunteers down on the farm in Sheffield.
In this episode Anneka has to create an album of nursery rhymes in just two days, for pregnancy and baby charity Tommy's.
It's a moving experience for the team in this challenge, as they try to shift Ilfracombe's public library all the way over to the other side of town. It needs two teams of builders to succeed, one to dismantle the old library and another to receive it at its new site. Once there, it will prove a valuable asset to the community, who need a venue for everything from playgroups to sports and social activities. But with only 56 hours to complete the task, will it prove a library too far?
In this episode Anneka needs to get hold of archaeologists and 200,000 gallons of water to go fishing in Shropshire.
Anneka has to produce 25,000 charity Christmas cards in time for the opening of the new Mencap nursery in Leeds - but then she finds that the nursery has yet to be built.
Anneka is set a very fishy task when she finds she has to go diving in the depths of the Red Sea with a group of disabled people. But first they must learn to dive - in just a few hours.
On the island of Cumbrae off the Ayrshire coast, Anneka finds she needs 1,000 cyclists, a demolition squad and some help from Glasgow Rangers.
The last challenge of the series is one of Anneka's most daunting: she has to equip a new medical centre serving up to 100,000 people in the Luwani refugee camp in Malawi, southern Africa. The refugees have fled Mozambique because of war and drought, and arrive in the camps exhausted and destitute. She has just 24 hours to fill an empty plane with emergency relief aid.