Clockmaker (1998)

Fourteen-year-old Henry and his friends are about to change history. Sneaking into the apartment of an eccentric Clockmaker, the kids discover that the old man controls time for the entire world through an incredible array of magnificent timepieces and weird machines. When one of the curious kids accidentally pushes a wrong button and gets launched back in time, the space-time continuum is severely disrupted. As everything begins to change around them, the young adventurers must travel back in time to save their friend...and the future