1899年,一起意外事件驱使Mandie Shaw走出自己的小木屋,踏上一段艰险的旅程。她说服彻罗基族印第安人朋友指引她穿越北卡罗来纳的蓝脊山脉,去寻早他叔叔John传说中豪宅。但是当Mandie和她的“守护者”Jason Bond 到达时却得知叔叔已经在还难中失踪。不久一位自称是John的陌生人突然出现,原本艰险的旅程更加迷雾重重……
When Uncle John (Terrell Anthony) forbids Amanda Mandie Shaw (Lexi Johnson) from joining his dangerous quest to keep an old promise, Mandie and her newfound mother, Elizabeth (L.A. Winters) take matters into their own hands. Joined by friends, they embark on a harrowing journey by train to protect Mandie's stubborn Uncle John. Grand adventure ensues as they race to outwit evil conspirators and dare to face the secrets of Lost Antler Cave-Mine. However, Mandie's most difficult challenge arises when she realizes that success will land her face to face with the one person she never wanted to meet.