History teacher Raine Carson suddenly finds herself running for her life through the grassy hills of 1555 Scotland from a band of angry and murderous brigands when only that very morning she had awoken in her own bed in the modern day world. She should never have agreed to participate in her colleague's experiment when he told her about the strange outcrop of stones that he had discovered hidden in the midst of the Colorado mountains. Suddenly the powers of the universe began to swirl around her as she was sucked through time and deposited in the lap of ancient history. Luckily Leith MacGregor, Laird of Hell's Gate, offers his protection against the marauders but only because he mistakes her for his betrothed, a woman he had yet to lay eyes upon. Unwilling to believe the exotic explanation of having traveled through time from the future, Leith's curiosity is, however, piqued about the stones responsible for her strange arrival. With the help of the local priest who also doubles as the town astronomer, the three embark on an adventure to find the stones and unlock the mystery and power they hold. Raine's urgency and determination to return to her modern world is shaken by her growing feelings for the Scottish Laird who offers to share his world with her. She must decide between returning alone to her home she so desperately misses or accept the offer of a new home and a new life in the ancient highlands with the man who has stolen her heart.