Biff and Chip find themselves caught up in a battle zone - where Vikings and Saxons are ranged against each other. King Alfred the Great wants peace - but there's a Viran in the Saxon camp who will do anything to stop him ...
When Neena and Wilf travel back to Ancient Greece, they face one of their hardest challenges yet. A Virain is trying to prevent the rebuilding of the Parthenon, in a bid to strike at the heart of democracy itself! Can the Time Runners find and stop him before it's too late?
Nadim and Neena face a challange they hadn't bargained for, when they travel back to 1666 and find themselves in at the very start of the Great Fire of London! Can they foil the Virans' evil plan before history changes course - for ever?
The Time Runners have to confront the Virans at two different points in the time, as they battle to stop a fiendish plan that could put the history of Scotland at stake!
It's a race against time as Chip, Kipper, and Wilma hunt down the Virans who are trying to destroy bridges, railway engines and even human lives! Can the Time Runners stop the Virans before the Virans put a stop to the Industrial Revolution itself?
At last the TimeWeb is up and running, and the children can begin their work as Time Runners, helping Mortlock to defeat the Virans. But their first mission - to ancient Rome - shows they still have plenty to learn ...
Deep in the heart of 8th Century Baghdad, Neena discovers a very important place - the House of Wisdom. This is a library full of books and ideas from all over the world. But what would happen if a Viran got in and stole some of the ideas?
Wilf has to go back in time to rescue part of the TimeWeb - an amazing time travelling machine that Mortlock needs to help him defeat the Virans. It's the most exciting and dangerous quest of Wilf's life - but will he succeed?
Neena is clever and brave. But has she got what it takes to go back in time and find the Matrix - a crucial part of the Time Web - before the Virans get hold of it?
The cell gives the TimeWeb its time-travelling power, and it would be a disaster if the Virans got their hands on it. Three of the children travel back in time to find the Cell .. but will they all come back safely?