The dark wizard Maldred has trapped dragon master Eko as well as wizards who have opposed him, all of them frozen in time and space inside a wall in his hideout; so Drake and Worm set out to seek the help of the Time Dragon--but when a imp named Beezel interferes Drake ends up back in his own past, and he must find a way to get back to the present.

Michael Evans is in Montana on a dinosaur dig with his paleontologist father, but he certainly never expected to find a live Tyrannosaurus Rex plucked out of its own time and looking for dinner, nor encounter a girl with some very advanced technology trying to trap the beast.

Seventeen-year-old Prenna, an immigrant who moved to New York when she was twelve, came from another time and she and the other travelers must follow strict rules to avoid destroying the new life they have worked so hard to get, as well as the one person Prenna is desperate to protect.

Young Meg Murry, her brother Charles, and their friend Calvin, embark on a journey through space and time, assisted by three eccentric women, when they set out to find Meg's father, a physicist who disappeared while experimenting with time travel.