The book tells us about Harry Heller, a different type, with "Wolf nature" as the treatment of Steppenwolf says; this treat was received by Harry from an unknown person. It all begins when Harry Haller arrives in a room he had rented. Harry leaves the room, walks around and discovers some advertisements that he finds interesting, for example the entrance to the magic theater, with the caption not for everyone. Back in his room, he crosses a street and sees a guy carrying an advertisement for the same theater and a box that Harry wants to buy; the guy gives him a brochure and leaves. The title of the brochure read: Steppenwolf Treat. Not for everyone. The diary tells the story of Steppenwolf: once upon a time there was a Steppenwolf called Harry but named Steppenwolf, he walked in tow but inside he was a real Steppenwolf. By accident, he arrives at the Black Eagle restaurant, and after leaving the teachers' house. house because he didn't like a photo, Harry sees a girl who seems interesting to him so he approaches her and they start talking, he tells her about the success of the professor's house and explains to her that he can't get to his house because something terrible is waiting for him there, suicideArmanda talks to Harry about the gratitude he feels towards her for saving him from death. According to Armanda, Harry will fulfill every order she gives him, and she ends by saying that she will make him fall in love with her and later kill her. A few days later, they see Pablo, a friend of Armanda; Pablo gave them a small box with white dust which was cocaine, he said it would help them feel much better; Harry accepts it and of course he feels better. One day, when Harry enters his room, he finds Maria naked on his bed, and he deduces that it is a gift from Armanda, so that he is living a relationship with Maria who has never experienced sex. eroticism and love. One day before the mask dance, Maria tells Harry that the fair she fell into has lost him, because the next day he will surely be Armanda's. Harry goes to the ball and looks for his friends without finding them, and when he has just left, he receives an almost illegible paper that says: tonight, from 4 p.m., magic theater – just for crazy people-.