The story of two British men, Patrick Ellam and Colin Mudie, who, in the mid-1940s, designed and had built a small sailboat, which they then used to make a transatlantic crossing. The boat, named Sopranino, was of a size much smaller than those traditionally thought of as being ocean-crossing-capable, and Ellam and Mudie's voyage was, in part, a way of proving the point that, with the right design, small, lightweight boats were capable of great things.