Judge Dredd movie

The Year is 2139. The Planet Earth has changed into a virtually uninhabitable place called the Cursed Earth. All of the Earths population have crowded into the cities across the planet, now known as Mega Cities. The crimes in these Mega cities became so violent and so powerful, that the regular justice system was powerless to contain, then it collapsed completely. But, a new Justice System came from the ashes, They were 3 justice systems in 1 (Police, Jury and executioner), they were called Judges. In Mega City 1 (formarly, New York), There was a Judge, named Joseph Dredd, who was the toughest and most stringent Judge in history. One day, he was charged with murder. He was tried and sentenced to life in prison because of it. Then, Dredd found out that it was in fact a person who shares his DNA. Former Judge Rico. Now, Dredd has to find out what Rico is planning to do, and to discover about his past.