Heading off to Scout Camp is supposed to be a completely normal expedition filled with earning badges, pitching tents, and enjoying the great outdoors. But for a fearless explorer with a habit of attracting the extraordinary, a quiet weekend in the woods is never guaranteed. When Hilda accidentally loses her crucial expedition map, a simple camping trip instantly transforms into a wild rescue mission involving a panicked Merman and a very angry sea serpent. You will dive headfirst into this thrilling new chapter book as Hilda is flung into a dangerous aquatic adventure far from the safety of her scout troop. Navigating strange waters and dodging the snapping jaws of a massive monster will require all of her wilderness survival skills. This fantastic addition to the hit series perfectly captures the humor, heart, and non stop action that fans adore. You will be cheering for Hilda as she attempts to help her new underwater friend, outsmart the terrifying serpent, and hopefully make it back to camp before anyone realizes she is missing.