How did the novice werewolf mission in World of Warcraft become a werewolf?

During the period when natural disasters ravaged the eastern kingdoms, the kingdom of Gilneas announced that it would not join the allied forces to stop the natural disasters of the undead, and built the wall of Gremaine. However, inside the city wall, the mage Archmage Arugal created a group of werewolves with the dangerous spell of the night elf druid, so King Gilneas abandoned the land ravaged by werewolves, which led to the rebellion of the local lords. The Crowley you need to support in the novice task is that place. At the beginning of the novice mission, the forsaken in Windrunner, sylvanas windrunner, joined forces with the werewolf to attack Gilneas. Then you were bitten by the werewolf while fighting with the werewolf, and you were poisoned when you arrived in Muwan Town. Fortunately, the new medicine controls your consciousness well, so that you won't go crazy, and then you can become a werewolf.