The Florida Panhandle Barback Games are coming up and Chloe's been drafted to represent the Sea Glass Saloon--competing in various obstacle-course events that conclude with rolling an empty keg up a hill. The rivalries are so fierce that some of the participating bars even stoop to bringing in ringers.

Meanwhile, Chloe's friend Ann--a descendant of the famed pirate Jean Lafitte--asks her to come along for a boat ride as Ann dives into the Gulf of Mexico. She's found some old papers that may identify the location of sunken treasure. Instead, she finds a sunken body--of one of the ringers hired for the Barback Games. Now that murder is in the mix, Chloe has to figure out whether one of the competitors went overboard . . .