The Hairy Bikers have only four weeks left at the Oxford Academy to prove that their social experiment pairing up teenagers with pensioners is working. Can friendships between the old and the young transform both groups?

There's trouble brewing. Jacub, who has ADHD, is still getting detentions and risks being thrown out of Old School unless he improves his behaviour. His older partner Clive goes on a mission to find out how Jacub's gaming habit is affecting his learning. Wez is also in trouble when he is withdrawn from his Maths GCSE exam for missing too many lessons. Can his partner Dave help him to become re-motivated by joining Wez in class?

Battling these problems, will the bikers ever get the evidence to prove Old School is worth continuing and attract funding to pay for it? Many of the partnerships are thriving, and those who initially helped their partner are now starting to receive help back.

Shy Charisma has been helping Hanif learn English and how to send emails. Now, Hanif reciprocates by helping Charisma with her driving lessons, and Charisma's confidence grows by the day. The School organises a special event and invites potential sponsors, educational specialists and charities to hear from the partners themselves about the project and their new friendships.

As well as re-testing the senior participants for improvements in mobility, strength and memory, and the pupils for improvements in behaviour and confidence, the GCSE results are about to be revealed. Will the numbers prove Old School is working? And most importantly, will the bikers' experiment raise enough cash to guarantee Old School has a future? And could older partner Dave's childhood dream be realised at last, courtesy of his teenage partner Wez? Show less