This is Sam and Beth's first visit to Oak Island since their mother and grandpa had a mysterious fight over three years ago. What occurs when they arrive is more than Sam could have hoped for -- and more surprising than the magic tricks he spends hours perfecting. Something strange seems to be happening to Grandpa, a fact confirmed by his odd behavior and the disgusting state of his once-immaculate home. Apart from losing his memory, he's also spending a lot of time engaged in a bizarre hunt for a 200-year-old treasure. When Sam is bitten by the treasure bug too, not even the discovery of a human skull can keep him and the whole family from plunging into a breakneck-speed mystery, in which the winner will take all.