In 1939, on the campus of Indiana University, a revolution has begun. The stir is caused by Alfred Kinsey, a zoologist who is determined to take sex out of the bedroom. John Milk, a freshman, is enthralled by the professor's daring lectures and over the next two decades becomes Kinsey's right hand man. But Kinsey teaches Milk more than the art of objective enquiry. Behind closed doors, he is a sexual enthusiast of the highest order and as a member of his 'inner circle' of researchers, Milk is called on to participate in experiments that become increasingly uninhibited.