After discovering their troop is in danger of disbanding , Snoopy and the Beagle Scouts set off to immerse themselves in nature and the great outdoors to earn their badges, with the Beagle Scout Manual as their guide . Meanwhile , Charlie Brown and friends enjoy their summer at Camp Spring Lake, crossing paths with Snoopy as they experience hiking, swimming, sitting around campfires , and everything summer camp and the outdoors have to offer .