While searching the cellar for a trinket for sale on the Net, Zak Gibbs discovers a beautiful day a wristwatch can accelerate the rhythm of its molecules. Thanks to her, he enters a new dimension: the hypertemps, and becomes invisible to the eyes of ordinary people. Fascinated by her discovery, Zak shares it with her friend Francesca and embarks with her for a joyful trip.
But the two teenagers are not the only ones to navigate this dimension. The powerful industrialist Henry Gates is determined to recover this experimental gadget, to complete it and put it at the service of his dearest dream: to enslave the human race. He then removes the father of Zak, a prominent physicist, to force him to develop the watch. Aided by Francesca and Dopler, Zak then goes in search of the industrialist to save his father.