内容简介：
To celebrate Brandon's birthday, his parents plan a party for his family and friends on his favorite train. The train's engineer, Buck, has ridden the track for most of his life. The excursion is to be his last; he has plans to retire. Not long after they begin their journey through the Pocono Mountains, everything along the old familiar train track suddenly changes mysteriously. Surprisingly, not everyone is aware of what is happening. Those who do notice don't know why or how these transformations have occurred. Their encounter with the strangers who have accidentally caused the fiasco leads to numerous adventures and rekindled memories. In their quest to return everything to the way it was, Buck, Brandon, Matthew and Jessie, along with their dogs Moxie and Bull, find themselves partnered with the strange visitors.