Only a year later, we again meet with favorite characters - Harry Potter, Ron, and Hermione in the walls of Hogwarts. The guys have already completed two courses of their training and now they're third-years. But can't our friends live and learn, right from the emergence of a native school they have trouble. As it turned out from a special magical prison, Azkaban, escaped very mysterious prisoner. Harry's very dangerous to make this creature the freedom to protect themselves, the three friends rush to find him. Them again waiting for a desperate life-threatening adventure and only their strength of spirit and friendship will help them overcome them.