The Fellowship arrives at the Walls of Moria, where they decide to leave Bill the Pony behind. Gandalf speaks "Friend" (Mellon) and the Doors to Moria open. As they enter, a great tentacled creature attacks, damaging the entrance and sealing them inside Moria. They begin their march to the far side and Frodo begins to hear Gollum following them.
These major characters were present