The Christie sisters think they are quite ordinary--which Rebecca Christie is very content to be. But this all changes one day when a family excursion ends in tragedy. The small plane they are in crashes, leaving the girls alone--their parents and brother missing. While searching for their family, Rebecca, Emma and Clara find a strange silver gate with a curious, yet familiar, symbol on it. Through the gate awaits a seemingly impossible quest fraught with danger and untold evil, along with a shocking secret. But it may also lead to their lost family. If only Rebecca can find the courage to lead her sisters into the mysterious world beyond the silver gate.