Superman's past collides with his present as thousands of Kryptonians miraculously arrive on Earth - but humanity doesn't appreciate these strange new visitors. A jarring culture clash quickly destroys relations between the two species and violence erupts! The United States government's own anti-Kryptonian team sets out to stop the erupting conflict and the situation escalates. Can Superman and his cousin Supergirl keep the peace? Or does humanity's last hope rest on the Man of Steel?