Harry had a secret. Something his mother told him he always had to keep secret unless he absolutely trusted the person. This secret was the fact that Harry Potter was an animagus. Why does he have to keep that a secret might you ask well, it was his back up plan. If things ever got out of hand in the wizarding world he could just turn into the stag that he was and run away into the woods and never return. But what happens when on one night he is out in the forbidden forest as a stag and he comes across a crying Draco Malfoy??