Fan CastingMan of Steel 2 The Woman of Tomorrow

The movie opens on Krypton 26 years before Man of Steel. We see the falling planet in its last moments as Jor El and Lara El send Kal El away. To protect Kal while on Earth Jor El and his brother Zor El send Zor El's daughter and Kal El's cousin Kara Zor El to watch over Kal. Things go as smoothly as they can but suddenly an asteroid hit's Kara's pod and sends it off balance and onto another planet. On this planet time moves differently so once 26 years had passed Kara remained 15 years old. One day a war between the Green Lanterns and the Orange Lanterns is brought to the planet where one of the Green Lanterns Alan Scott saves Kara and brings her to Earth where she is then put into the custody of Clark Kent. Eventually the war between Lanterns grows worse and attracts the attention of a man named Brainiac. Brainiac now being in the war meant certain doom for everyone so the Green Lantern of sector 2814 named Hal Jordan finds Superman and asks for help. Eventually Kara comes along and becomes the Supergirl. The movie ends with Superman getting into Brainiac's ship and pressing a button that sends it light years away. Superman and Kara go back to Earth and Kara becomes one of Metropolis's official protectors.