Moish Braverman has better things to do than spend his precious time shopping for his bar mitzvah suit, and one of them is trying to figure out what's going on with his Uncle Feivel Berish, a brilliant but absent-minded talmid chocham. Why has he shown up at the Bravermans' doorstep wearing fancy new clothes, carrying wads of money in his suitcase, and taking endless mysterious phone calls? What's going on? Every minute Moish can steal away from cleaning up his room, doing homework, or buying his bar mitzvah hat is one more precious minute he can spend secretly solving the mystery of Uncle Feivel Berish. As more clues turn up and the suspense rises, Moish lets his little sister Gitta in on his secret. Then they learn that this mystery is not just a game, and Moish fears that his uncle might be in real danger...