The plot to steal the Philosopher's Stone took place during the Hogwarts 1991–1992 school year, in one of Voldemort's first attempts to gain power. The plot began with the Break-in of Gringotts Wizarding Bank (1991) and ended with the Battle in the Philosopher's Stone Chambers with just Harry , Voldemort and Quirrell . After Quirinus Quirrell failed to rob the Stone, his master possessed him at Hogwarts. There they made many attempts to steal the Stone, until 4 June, 1992, when Quirrell died.