Three detectives- Charlotte, Katherine, and Darby, are always on their way to solve a mystery. This time Mr. Quinn, an old man, has summoned them to Bellingham valley to solve the mystery of an extraordinary watch. But there is someone else who is on their way to get that watch. Later they get to know that Mr. Quinn is involved with that person.

Will they be able to get that watch first? Or will they miss this case and become unsuccessful?