The narrative follows a group of young companions who cruise the Florida reef and Everglades in three small canoes, experiencing shipwreck, disappearance, and island living after one canoe is lost. Episodes alternate between sea adventures—drifting on rafts, being carried by the Gulf Stream, reef mysteries, shark-fishing, a black squall, and a stranded steamer—and inland trials in the Everglades, including fires, dangerous wildlife, and encounters with a Seminole camp. Resourcefulness, loyalty, and self-sacrifice are tested as characters search for missing friends, repair boats, and negotiate unfamiliar landscapes, culminating in coordinated rescues and a resolved, optimistic conclusion.