This story is the first in a series written about the adventures of four public school kids in Brockville. One of the kids, Bobby, is 12 and in Grade 6. The others, Tommy, Mary and Dick are each 10 years old and in Grade 5. Bobby incessantly bullies the others, throwing stones at them, pushing Tommy into the St. Lawrence River and other unfriendly acts. The kids meet an ancient American who has retired to Brockville and are fascinated by his stories. He is a retired sea captain and he describes some of the mysteries of the sea to them. The kids live relatively normal lives. They go fishing; they play a first game of golf, and after hearing a career day talk by a police detective, decide to form a club to solve mysteries. Mary is selected as the first President of the club and helps them as they choose to follow Robert's Rules of Order to run their meetings. The captain gives them an assignment to investigate and through his efforts, the bully is rehabilitated and everything works out alright in the end.