The Battle with Satan

At the end of the 20th century Pope John Paul II reintroduced the ritual of exorcism into the Roman Catholic Church. In Poland, exorcisms quickly gained popularity, the Catholic Church performs there about 20.000 exorcisms every year. We follow several Polish girls who believe they are 'possessed' and undergo exorcisms. This gives us an insight to the world of exorcists. Father Radon, a Catholic priest and scientist attempts to research the subject. Is exorcism really helping the needy? Or is it a superstition that prevents people with mental disorder from taking advantage of psychiatric treatment?