Sir Laurence Olivier is making a movie in London. Young Colin Clark, an eager film student, wants to be involved and he navigates himself a job on the set. When film star Marilyn Monroe arrives for the start of shooting, all of London is excited to see the blonde bombshell, while Olivier is struggling to meet her many demands and acting ineptness, and Colin is intrigued by her. Colin's intrigue is met when Marilyn invites him into her inner world where she struggles with her fame, her beauty and her desire to be a great actress.
Voldemort is tightening his grip on both the Muggle and wizarding worlds and Hogwarts is no longer the safe haven it once was. Harry suspects that dangers may even lie within the castle, but Dumbledore is more intent upon preparing him for the final battle that he knows is fast approaching. Together they work to find the key to unlock Voldemort's defenses and, to this end, Dumbledore recruits his old friend and colleague, the well-connected and unsuspecting bon vivant Professor Horace Slughorn, whom he believes holds crucial information.