Two teenage boys are asked by their grandfather to bring his sailboat 150 miles down the Intracoastal Waterway. They are captain and crew sailing for the first time by themselves. Along the way they meet interesting people, encounter bad weather and find a little romance. At the beginning of the passage their primary objective was to have fun, but the responsibility of the boat and the relationships with fellow cruiser met along the way have a maturing effect on them both.