For centuries, animals have served humans for their entertainment. In the circus, they perform tricks while being applauded. But what happens behind the curtains, will give you a sinking feeling in your stomach. It is with very good reason, that efforts have been increased to ban the keeping of animals in the circus. The lion, Will, also had to endure the worst of these tortures for 13 years. But then he experienced a moment that turned his life upside down.