2788. Only disabled people live on Earth. While everyone else travels between worlds, eighteen-year-old Jarrah is forced to hang around here: a congenital defect of the immune system, which occurs in one person in a thousand, does not allow her to be on other planets. Her parents abandoned her and, saving their daughter’s life, sent her to Earth immediately after birth. While Jarrah may not be able to visit other worlds, she can watch films about their inhabitants and is well aware of all the jokes they make about her kind. They call her a “monkey”, a “geek”... But this “monkey” does not intend to give up. Having invented a legend for herself - now she is an ordinary child from a military family - Jarrah joins a class of normals who arrived on Earth to undergo practice in a history course. A whole year at excavations among the dangerous ruins of ancient cities... Jarrah will look with pleasure at the faces of those around her when they realize that they were fooled and mistook the underdeveloped for a normal person. And she never expects that she can make friends with her enemies, risk her life to save them, and even fall in love with one of them.