I found this over at Aint It Cool News and hopefully it is acurate. If it is it sounds ok but I'm still waiting for a Superman movie where he is established and has to stop a threat from the bad guys. Exploring the origin and his roots is ok but come on they have done that before many times.
In the pantheon of superheroes, Superman is the most recognized and revered character of all time. Clark Kent/Kal-El (Cavill) is a young twentysomething journalist who feels alienated by powers beyond anyone's imagination. Transported to Earth years ago from Krypton, an advanced alien planet, Clark struggles with the ultimate question - Why am I here? Shaped by the values of his adoptive parents Martha (Lane) and Jonathan Kent (Costner), Clark soon discovers that having super abilities means making very difficult decisions. But when the world needs stability the most, it comes under attack. Will his abilities be used to maintain peace or ultimately used to divide and conquer? Clark must become the hero known as "Superman," not only to shine as the world's last beacon of hope but to protect the ones he loves.