Superman: Doomsday

Superman Doomsday is a 2007 American directtovideo animated superhero film, adapted from the popular DC Comics storyline The Death of Superman, focusing on the supposed death of the superhero Superman. The film is rated PG13 by the Motion Picture Association of America for action violence and is the first in the DC Universe Animated Original Movies line released by Warner Premiere and Warner Bros. Animation. It was followed by Justice League The New Frontier.

Lois Lane Anne Heche and Superman Adam Baldwin are romantically involved, but Lois is unsatisfied with the arrangements of their relationship. Superman insists that they keep it a secret from the public by limiting their encounters to the Fortress of Solitude, and he has not yet confided in her that he is actually Clark Kent, although she already suspects.Workers from LexCorp unearth a spaceship while digging for one of Lexs projects, inadvertently releasing a geneticallyengineered supersoldier known as Doomsday. The creature is highly homicidal and aggressive towards any lifeform or object that moves, as Doomsdays creators found him to be unable to distinguish friend from foe, making him capable attack anything in sight without remorse or hesitation of any kind. Doomsday kills the entire digging crew and begins a bloody rampage towards Metropolis. He kills a deer, a dog, the dogs owner, and a truck driver it is implied that other people fell victim to his homicidal fury, as well. Superman meets the monster there and the two engage in a devastating crosscity battle. Superman ultimately kills Doomsday, but succumbs to his own injuries and dies in Lois arms. ........

Source: Wikipedia