Dylan Dreyer travels to the volcanic Galapagos Islands to follow 19th century botanist Charles Darwin's trail when he studied the evolution of the islands' plants and animals; she also meets the only lizard in the world that has learned to fish.

Dylan Dreyer visits hidden parts of the Caribbean Islands where giant sea turtles lay their eggs; Dominica's boiling thermal lakes; Trinidad's deep scarlet birds; and catches up with hummingbirds.