The Big Six Joe, Bill and Pete are members of the Coot Club which aims to protect wildlife. They spend most of their time on the river in their little boat, the Death and Glory.
Trouble starts when they are blamed for setting boats free from their moorings.
Tom Dudgeon, and Dick and Dot, children who are staying with Mrs. Barrable, all become detectives and search for clues to lead them to the real culprit. 90 minutes Usually ships within 24 hours.