The story begins in Hogwarts, the magical school of witchcraft and wizardry, the school where Harry Potter, Ron Weasley and Hermione Granger attend.
Call to Adventure
Harry, Ron and Hermione are eating their dinner when Dumbledore calls them to his office.
Headmaster Dumbledore calls Harry, Ron and Hermione to his office to tell them about a mission, where Hermione's intelligence will come in handy.
Crossing the threshold
Harry and Ron agreed to the mission, but Hermione disagreed because she didn't want to miss the exam, so Harry and Ron convinced her to come along.
Dumbledore gave the trio some tools that each one of them held, Harry got the Sword of Gryffindor, Ron the invisibility cloak, and Hermione recieved the knowledge.
Hermione was told by Dumbledore that they had to enter a secret portal door in Hogsmeade. They looked around and saw the door in the ground and pixies guarding it.
Harry, Ron and Hermione jump into the portal and teleported and ended up on the ground. Hermione looks up and see's a silhouette of Voldermort, but it disappeared as soon as Harry and Ron stand up. The trio walked around solving riddles and quizes which unlock doors.