Sheriff's deputy Rick Grimes wakes up in the hospital after having been shot on duty. When he awakes, he discovers something causing bodies of the dead to come to life and attack the living. The town he protected is mostly abandoned, with many dead roaming the streets at night. Believing that his wife, Lori, and son, Carl, have most likely fled to safety in nearby Atlanta, he grabs a stock of weapons from the locker of his police station, and sets out to find them.
The Walking Dead
Due to his gun toting arrival in Atlanta, Rick causes a group of survivors to be trapped by walkers. The group dynamic devolves from accusations to violence, as Rick must confront an enemy that is far more dangerous than the walkers themselves.
Rick makes a decision to go back to Atlanta to retrieve the bag of guns and save a man's life. Lori and Shane must deal with the surprising return of someone they thought was dead, which was also a surprise to Shane who has been having an affair with Lori.
Rick's mission to Atlanta is in danger when things go awry. Back at camp, Jim becomes unhinged.
The group is led by their newest member to the Center for Disease Control while one of the members is forced to make a choice that has harsh consequences.
An odd scientist lets the refugees into the Center for Disease Control. While they stay at the facility, everything seems peaceful, despite the events going on throughout the outside world. However, peace cannot last forever.
Rick leads the group out of Atlanta. On the highway, they are stopped by a threat unlike anything they have seen before. The group searches for someone who has gone missing.
Desperate to find help for Carl, Rick heads for Hershel's Farm. Meanwhile, the rest of the group continues to hunt for Sophia in the woods. Finally, Shane and Otis head into the nearby town to scavange supplies in order to save Carl's life.
The Greene Family and the Grimes family wait for Otis and Shane to return with the medical supplies for Carl. Meanwhile, Shane and Otis find themselves trapped in a school with hungry walkers waiting to eat them. Finally, Daryl and Andrea continue the hunt for Sophia.
The survivors have to deal with a huge walker that has fallen into one of the Greene Family's wells. The search for Sophia continues with Daryl finding a sign. Glenn and Maggie go into the town for some supplies, but end up doing more than just scavanging for medicine.Rick and Hershel have a discussion over God's role in the world and about how long Rick's group can stay at Hershel's farm. Finally, Lori asks Glenn to bring her a special item which could have grave effects on her family.
Rick and Shane argue about whether the search for Sophia should end. Daryl gets hurt and has a hallucination involving someone from his past. Hershel warns Maggie to keep her distance from Rick's group. And Glenn finds out why Hershel doesn't want the group near the barn.
Revelations begin to come out among the members of the group. Shane teaches Andrea how to fire a weapon but the desire to put the past behind him and focus on survival eats at him. Glenn wrestles with keeping his secret about the barn Walkers from the group. Lori confides in Dale about her pregnancy.
The secret of the Walkers in the barn is fully exposed and Shane forces a decision to be made about them. Herschel has given Rick an ultimatum that his group must leave.