Professor Quinn Delaney is in the final stage of his lifelong quest to unlock the mystery of time travel. But before he can complete his work disaster strikes. The professor's twins, Dani and Daric, are abruptly ripped from the present and flung into the past. Desperate to bring his children back home, Quinn turns to a dear friend and colleague, Richard Barak Case, for help. They must retrieve a rare mineral from an underwater cave halfway around the world; without it, Quinn's children could be lost in time forever. But Richard has his own agenda and he'll stop at nothing to get his hands on everything Quinn holds dear. Meanwhile, Dani and her brother, Daric must use every ounce of resourcefulness they possess to survive in their unfamiliar world. Without knowing how to control the time travel bands that jerked them into the past, the siblings are forced to helplessly watch history unfold, while fighting the overwhelming urge to intervene and risk altering history forever.