On the heels of their time-traveling adventure in the Rhythm of Time, best friends Rahim and Kasia are now working with Aevum, a mysterious future organisation that tasks them with averting disaster and safeguarding the flow of history. But their adventures take a dramatic turn when Rahim inadvertently jeopardises their mission, thrusting them into a web of intrigue populated by a diverse cast of time-travelers with their own enigmatic motives. Hunted by doppelgängers from parallel dimensions and cunning robots masquerading as allies, they are plunged into a shadowy battle for survival, and now Rahim and Kasia must navigate a treacherous path to unveil the truth and avert a devastating future across multiple realities. Dynamic, richly written characters, a mystery that twists and turns through the corridors of time and the multiverse, interior illustrations, and crisp prose make for an infinitely readable sci-fi romp that is sure to delight young readers.