在这部超时空寻宝家庭/西部/奇幻片中,傳說在大約一百年前，有一群銀行搶匪在一次搶劫後便在山中遇害，他們的屍首最後則與搶來的黃金一起埋在山林之中；然而，泰勒（布蘭登萊恩巴瑞特）和他的朋友卻認為此事並非傳說，而是確有其事--而證據藏寶圖就在他們手中！
這群年輕冒險家的暑期夏令營變成了一場刺激的尋寶之旅，而更出人意料的是，他們竟意外進入時空隧道，回到了1891年：一個充滿淘金者、馬匹、和酒吧群架的年代；他們的校長（艾美獎得主拉瑞德克，「洛城法網」）竟成了當地的警長，並計畫將黃金占為己有！
如今這群穿越時空的尋寶冒險家必須阻止貪婪的壞警長私吞寶藏，並設法安然無恙地回到現代...
Four kids slip through a hole in time when they discover a hidden mine shaft that transports them to the old Wild West. Their magical journey takes them to a place where they encounter thieving bandits, pandemonium and adventure in their pursuit of lost gold. What the youngsters don't know is that their Principal is trying to capture the lost treasure first. Now the gang has to stick together to find the hidden gold before their evil Principal locates the loot for himself! Adventure has a new Posse!
