Zara and Nick are soul-mates - they're meant to be together for ever.

But that's not quite how things have worked out. For starters, Nick is dead, and has been taken to Valhalla, a mystical resting place for warriors.

If they can find the way there, Zara and her friends will try to get him back.

But even if they do, Zara has turned pixie - and now she's Astley's queen!Meanwhile, more teenagers go missing as a group of evil pixies devastates the town of Bedford.

An all-out war seems imminent and Zara and her friends need all the warriors they can find . . .