When Sue’s bike is stolen one evening in Oxford, Dan decides to do something. He starts Oxford Bike Finders and soon lots of people are contacting Dan on the Internet with information. Then one day, one of Dan’s followers sees a bike being stolen and Dan and Sue decide to follow the thieves. What happens when they find the thieves, and can they get Sue’s bike back?

Holly’s favourite place is the tree house in the old oak tree in her garden. When her father decides to cut down the tree to build an office, she starts an unusual protest and moves out of her home and into the tree house. Who will win the battle of the tree?

Fifteen-year-old Jay Stone is good-looking, athletic and he has got lots of friends. There’s just one problem. Jay’s legs are short, so short that the other kids call him ‘Stubs’. When Jay gets a surprise place on the school’s American Football team, some of the older members decide to teach him a lesson. Can Jay ignore their comments about his legs and keep the place on the team?

Don and Mike are best friends. They live in the sleepy town of Saltley and they both love birdwatching. Their lives suddenly become exciting when Mike spots a pair of osprey at a nearby lake. The boys decide to protect the birds so that they can make a nest. But when Mr Roberts takes an interest in the birds the boys become suspicious.

When teen hackers Tricia and Daniel discover that a local company could be involved in a sinister plot to trade carbon, they suddenly find that their lives are in danger. How is Tricia’s father involved? Can Tricia protect her family and Daniel?

When Caterina finds her great-great grandmother’s diary in the attic, she reads about her difficult life as a child worker in the local mill. Caterina starts thinking and soon she starts a campaign against a local boutique that sells cheap fashionable clothes. However the shop belongs to Jake’s Uncle Sanjit. Can Caterina convince Sanjit to sell ethically made clothes? And are Sanjit’s suppliers what they seem?