Zack (seven years old) is studying medicine. A mysterious book thrusts him into a fantasy world filled with definitions, symptoms and cures. Although Zack fails to understand the dysfunctional family life he is a part of and the harsh reality of his environment, he endeavors to find a cure for his abusive father. With no-one around to inspire him, Dr. Zack, his imaginary mentor, comes to the rescue. Making an appearance while Zack is fully immersed in studying the book, the doctor teaches him that cooties aren't real and that injections are necessary to cure people. After attempting to diagnose a mentally unstable father with a midlife crisis, Zack is kicked out of the family trailer. He watches two serious looking men, clad in dark black suits, walk by. A knock on the door surprises the father who assumes the neighbors filed in a complaint about him. Little does Zack know that he and his mentor are about to deal with their greatest challenge yet. Will Zack attain his dreams and ...