Gargoyles: Guardians of the Gate

When Lucy Lancaster impulsively buys a gargoyle medallion she and her brother, Kevin, are plunged into a world of living gargoyles and deadly flying lizards. They face puzzles and unexpected dangers in a race against time. If they can't help the gargoyles find a way to lock the gateway between worlds, an army of vicious predators will invade and unleash destruction upon the world.