Leatherback turtles are mysterious ocean wanderers, yet each summer a few are spotted around Ireland's Dingle peninsula. Turtle scientist Tom Doyle needs to catch and track a leatherback to find out more about these endangered creatures, but with so few sighted each summer can Tom defy the odds and catch one? This is the story of Tom's search to find a leatherback turtle off the coast of Ireland and of one summer spent among the extraordinary wildlife of these seas.