由於歷史頻道強打節目「橡樹島的詛咒」廣受歡迎，尋寶獵人瑞克和馬帝拉吉納接獲世界各地尋寶者提供的線索與建議。幾個月前，馬帝認識一位密西根男子凱文狄克斯塔，並得知了一個謎團，其神秘程度可媲美橡樹島的秘密。狄克斯塔與他的兄弟詹姆士與馬克對這個可追溯至美國內戰時期的國家寶藏十分著迷。1865年時，密西根州的聯邦軍在失敗的叛軍總統傑佛遜戴維斯逃離美國之前就開始追捕他。據說他們從他身上取得了一些寶物，並以火車走私到北方。接著，他們把火車引擎給埋了，藉此隱藏他們的蹤跡（不過凱文很快便發現了這條線索），並就這些神秘寶物發生爭論。據說部分寶物位於火車車廂內，送到船上並沉入密西根湖底，另一部分可能位於密西根地底的隧道中。還有人說寶物位於猶他州一名自殺男子的山洞中。凱文有自信能找到沉沒的火車車廂，並且已取得密西根湖的挖掘許可。他也調查了猶他與密西根的線索，以及可能藏有寶藏的河岸和多個美國南部的相關地點。這一切會不會是一個將刺殺亞伯拉罕林肯與美國富豪崛起連結在一起，並打造富者為王之國的陰謀呢？真相就是無價之寶。
With the success of History's hit series, THE CURSE OF OAK ISLAND, treasure hunters Rick and Marty Lagina have been approached by treasure seekers around the world offering leads and seeking advice. A few months ago, Marty learned of a mystery that rivals that of Oak Island when he was introduced to Kevin Dykstra, a fellow Michigan man. Dykstra along with his brothers James and Mark, is obsessed with a story of national treasure that goes back to the Civil War. In 1865, Union soldiers from Michigan tracked down Jefferson Davis before the defeated rebel president fled the country. They allegedly confiscated something of value from him and smuggled it north on a train. They later buried the train engine to hide their tracks (though Kevin has quite literally found the tracks again), and began arguing over the mysterious treasure. Part of it was allegedly put into a train car on a barge that sank in Lake Michigan. Part of it may lay in a warren of tunnels beneath Michigan. And another trove allegedly exists in Utah in the cave of a man who committed suicide. Kevin believes he can find the buried train, and has permission to dive the Lake Michigan site. He is also investigating the Utah and Michigan leads, as well as banks which may contain remnants of the treasure, and various connected sites in the American south. Is it all part of a vast conspiracy, one which connects the assassination of Abraham Lincoln to the rise of America's super-rich, and created a nation where billionaires are king? Truth is gold.
