Constant heavy rain has flooded low lying areas of the Everglades, threatening some of the wildlife. Park Ranger, Tom, and a team of local volunteers round up various animals to move them to higher ground.
Dreams of becoming a famous explorer inspire Mark to take Ben on a hunt for dinosaur skeletons and pirate's treasure. Tom investigates reports of a dangerous nuisance bear.
Ben and the Wedloe family gets some new neighbors when a free spirited young couple moves into an old shack nearby. Boomhauer is less than pleased with the antics of the newcomers.
Hobo Jim comes to town. His visit to the store where Mark is helping out puts Mark in a moral dilemma. Boomhauer is tasked with protecting gator hatch-lings.
Mark takes boat trips to the old castle where he daydreams, sings and explores with Ben and Charlie the raccoon. Mark and the animals aren't the only visitors to the castle.
While playing pirates Mark and his friend Willie have a strange encounter with a giant in the swamp. Local trappers complain to the warden about vandalized traps. A crew surveying for a new highway has their work sabotaged.
Mark and Ben spend time with their new friend. Tom continues to investigate sabotage of the construction crew. He suspects Boomhauer may be the culprit.
Ellen (Beth Brickell) volunteers to take Mark and his Scout troop on an overnight camping trip when Tom (Dennis Weaver) isn't available. Reluctantly the boys accept Mark's mother to go along with them. When a hurricane threatens to swamp the island where they are camping and Ellen rescues the boys with Ben's help, the boys gain a new appreciation of her.
Concerns about littering inspire the creation of a new Junior Game Wardens club. Mark competes to become president of the club. His biggest competitor is the most popular boy in school.
As a big storm is brewing Tom goes out in pursuit of poachers who are hunting with bow and arrows. Mark is home alone with just the animals Ben and Charlie the raccoon.
Ben gets into lots of mischief around the house. Local authorities are on the lookout for a missing bus and a zookeeper is interested in acquiring Ben for the zoo.
