Origin

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After waking up from a coma, Rick finds the world to be quite a different place. Finding no Doctors, Nurses or anybody in the hospital, Rick ventures outside. What he finds is a desolate, barren scene. Nothing, no noises or sights of cars. No one. Nothing. Rick slowly makes his way to his house. Only to find his family is gone. What he does find is a "squatter" in his house. A man and his son, hiding from the madness outside. After waking back up -the son believed Rick to be "one of them" and hit in the head with a shovel- Rick gets the full story. Zombies walk the streets. The undead roam the city preying on the living. It is here that Rick is told that most folks fled to the cities, this case Atlanta, and believes his family must have made the trek as well. So Rick returns to the Police Station, his old place of employment, gathers some gear and heads to Atlanta. He is driven to find his wife and son.

On his way to Atlanta the squad car that Rick takes runs out of gas and he makes his way on horseback.  As he makes his way into Atlanta he gets surrounded by Zombies.  He fallls off his horse and the zombies rip apart the horse.  As Rick runs away from the zombies he was found by Glenn.  Glenn helps him escape from Atlanta and they make their way Glenn's camp and Rick finds his son and wife still alive.