Superman Returns

Superman returns to Earth after spending five years in space examining his homeworld Krypton. But he finds things have changed while he was gone, and he must once again prove himself important to the world.
Superman returns to discover his 5-year absence has allowed Lex Luthor to walk free, and that those he was closest to felt abandoned and have moved on. Luthor plots his ultimate revenge that could see millions killed and change the face of the planet forever, as well as ridding himself of the Man of Steel.