Bick, Beck, Storm, and Tommy Kidd are true professionals when it comes to uncovering the world's greatest lost treasures. They do the hard work without ever seeking out fame or glory. So, they are less than thrilled when their ultimate rivals, the Collier Kids, start treasure hunting for the cameras. The Colliers care more about looking good for their streaming show than actually recovering historical artifacts. When the Kidds are invited to compete directly against the Colliers for the title of The World's Greatest Treasure Hunting Kids, they jump at the chance to show everyone how real exploring is done. But the competition quickly takes a serious turn. With dark rumors swirling about a massive mistake made by their great-grandfather years ago, the Kidds realize that more than just a shiny title is on the line. They must solve a deep family mystery and pull off their biggest treasure haul yet.