: Harry ultimately faces Professor Quirrell, who is being possessed by Voldemort. Harry’s innate protection allows him to defeat Quirrell and secure the Stone, preventing Voldemort's return to power. Media Context
: The trio discovers that a legendary object, the Sorcerer's Stone (or Philosopher's Stone), which grants immortality, is hidden within the school.
Harry Potter And The Sorcerer's Stone - Official® Trailer [HD]
: Believing Professor Snape is trying to steal it, they navigate a series of dangerous magical obstacles—including a three-headed dog named Fluffy and a giant chess game—to protect the Stone.