George and his friends know this isn't a just game of hide-and-seek anymore. There is a cursed diamond buried in the tunnels, and they are close to finding it. But Leroy and his thugs know who they are, and where they live. It's too big a risk to go on, but George won't give up. Sworn to protect each other by the Pyrate's Oath, the four friends vow to track down the last map -- the one that will complete the puzzle and lead them to the treasure. But as they take extra care to look out for one another, they don't realize they are putting others in danger.