This is one of those stories that start with a pig in a teeny hat. It's not the one you're thinking about. (This story is way better than that one.) This pig-in-a-teeny-hat story starts when a very uninquisitive boy stumbles upon a very mysterious society. After that, there is danger and adventure; there are missing persons, hired thugs, a hidden box, a lost map, and famous explorers; and there is a girl looking for help that only uninquisitive boys...

Alex, who lives with her uncle in the flat above their doorknob shop, meets her new teacher, Mr. Underwood, a descendant of a famous pirate, and soon three vicious men turn up in town, looking for a map to a fabled family treasure.