The Fisher recruits are in their second week of training, and Warrant Officer Collingbourne is expecting each of them to make the step from civilian to sailor, but with 23 teenagers in the division this is a harder task than normal. After a weekend of skylarking, 17-year-old Dunbar takes a prank too far, and his future in the Navy hangs in the balance when he finds himself in front of the commander, having to explain his actions.