The scene opens with several small vessels drifting about on the ocean. There had been a fire, followed by an explosion aboard a vessel carrying slaves. Most of the crew were pretty nasty people, but there were two pairs of people who become the heroes of this story. One of these is Ben Brace and a sixteen year old boy seaman, whom he had rescued from being eaten by the thirty or so crew members who had found enough spars, timber, sails, ropes and barrels to construct a large raft, though rather badly made, because these men were consoling themselves with a rum-barrel. At a distance floated the ship's gig, with the captain, the mate, the carpenter and three other men. Finally, there is a construction, hardly more than a large barrel, containing Snowball, an African ship's cook of the Coromantee tribe, together with a little girl of eight or ten. Luckily these get together with Ben Brace and the boy William, and it is their adventures that the story is mainly about.
"Captain" Reid wrote many adventure novels akin to those written by Frederick Marryat and Robert Louis Stevenson. He was a great admirer of Lord Byron. These novels contain action that takes place primarily in untamed settings: the American West, Mexico, South Africa, the Himalayas, and Jamaica.