Complex sentence: The film tells of real-life Robin Lee Graham (Joseph Bottoms), a 16-year-old boy who sets out in a 23-foot sloop and is determined to be the youngest person to sail around the world.
Split into simpler sentences: The film tells of real-life Robin Lee Graham (Joseph Bottoms), a 16-year-old boy who sets out in a 23-foot sloop. He's determined to be the youngest person to sail around the world.