Can Mrs May and the children save the otters and the sea life when some men dump toxic waste on Green Island?
It's history ... but this time it's personal! The Virans strike closer to the Time Runners than ever before in this exciting adventure set at the time of the slave trade in the Caribbean.
Tyler travelled forward in time over 200 years to help Mortlock and the Time Runners defeat the Virans. But who is he, and what is his story?
Chip and Wilf travel back in time to try to prevent a Viran from putting HMS Victory - Nelson's flagship - in danger. But life on board a warship is hard and dangerous ... will the boys find the Viran in time?
It's 1941 and the Second World War is raging. It's the perfect chance for the Virans to attack and change the course of the history. But can Wilma, Nadim and Kipper put a stop to the Viran's plans?
What is the secret of the strange box that Chip finds in his bedroom? And who is the sinister man who seems to want the box so much?
What will the children find behind the strange door that appears in the landscape? And what does it have to do with Mr Mortlock, the school caretaker?
All the pieces of the TimeWeb have been found, and now it's just a matter of putting them all together ... or is it? There is one last dangerous quest to complete before the TimeWeb can begin its work.
The magic key takes the children back to a time when making breakfast is very different.