Imagine many similar worlds, which we call parallel and only guess about their existence. But what if they really exist, and the children who live in them are taken to the so-called Academy of Heroes every two years? What if any boy or girl between the ages of sixteen and seventeen could get into the Academy? “What kind of Academy?” - you ask. A place where children are taught to be strong, brave and purposeful. Heroes. But is everything so good? None of us would be happy if he ended up at the Academy. Why? There is only one answer: not everyone will survive in it. Not everyone will be able to pass all the tests and reach the victorious end. Do you think you could?