Jase, Jep, and Murry make a discovery that just might sink their efforts to get back in time for Jase's and Jep's daughter's graduation party.

Jase and Jep go to Greensburg, Kansas to surprise Murry with a meteorite treasure hunt for his 75th birthday. After he learns how valuable meteorites can be, Si is on his own unique mission to find out all he can about these rare rocks from space.

Miss Kay throws down the gauntlet to find a rumored buried treasure in Bernice, LA. When Murry challenges the location of the alleged burial, the competition to find the gold is on. They split up on a chase to uncover exactly where X marks the spot.

After getting an insider tip, Jase, Jep, and Murry hunt for historical relics at Grant's Canal, a failed military operation from the 1800s. Meanwhile, Si strikes a deal with an auction house so they can sell their treasures for cash money.

After learning that Missy and Jessica are going to Abilene, Texas to feather the nest for their college kids, Jase, Jep and Murry use the trip as a rare opportunity to hunt for WW2 artifacts on American soil at an old training ground called Camp Barkeley.

The treasure hunters go on a men's night out at the Magnolia Ridge, a beautiful, historical property that connects back to the Lewis and Clark expedition. Meanwhile, Si orchestrates a photoshoot for the guys to help them gain exposure.