Reading age: 9 - 11 years old. 
 
It's New Year's Eve and there's trouble on the timeline. Elle is sent on an urgent trip to the 31st of December 1999, the eve of the new millennium, where Millennia's on the rampage. She aims to reinvent herself as a malevolent millennial by taking on Time itself.

Can Millennia change the past to destroy the future? It can't be left to chance. It's up to Elle and The Infinites to save the world. And with the very nature of time at stake, they'll have unexpected help from friends in high places.

It's the final countdown. And it starts now . . .