The Walking Dead

First Season

The series begins with sheriff's deputy. Rick Grimes' being wounded in a shootout with armed criminals. He awakens weeks later from a coma in an abandoned and badly damaged hospital. Upon leaving, Rick discovers a post-apocalyptic world overrun with zombies (or "walkers", as they are often referred to in-show). Rick also discovers his wife and son are missing, and he encounters two survivors — Morgan Jones and his son Duane — who explain the situation to him. Acting on a rumor the two had heard, he arms himself and begins a perilous journey to Atlanta, Georgia, where the CDC is said to have set up a quarantined safe-zone in the city. Upon reaching Atlanta, he soon discovers the city has instead been overrun by walkers.

Second Season 

The second season begins with Rick and his group of survivors escaping the CDC. They decide Fort Benning will be their next destination. Along the way, they encounter a traffic jam of abandoned vehicles on Interstate 85. The group loots several vehicles but is forced to hide under them as a large herd of walkers approaches. A walker chases Carol's daughter, Sophia, out from her hiding spot and, with another walker, pursues her into the woods. Rick finds her but loses her again after drawing off the walkers. During the search for Sophia, a hunter named Otis accidentally shoots Carl. To get help for him, Otis leads Rick and Shane to a large, isolated farm owned by a veterinarian named Hershel Greene, then helps Shane look for medical supplies at the local high school. After getting them, Shane injures his leg and sacrifices Otis to the walkers so he can get away. The survivors then move to the farm while Carl recovers, trying to coexist with Hershel's family, but dangerous secrets and disagreements over leadership cause tensions to rise. Lori is revealed to be pregnant (she is not sure whether Rick or Shane is the father), and Glenn builds a romantic relationship with Maggie, Hershel's eldest daughter. Glenn also discovers the barn is full of walkers, some of whom are Hershel's family members. After Shane releases the walkers to be exterminated, Sophia emerges from the barn, as a walker, and Rick reluctantly shoots her.

 Third Season

The third season begins several months after the group escaped the farm, and Lori is in the final days of her pregnancy. The group stumbles upon an overrun prison and sets about converting it into their new home. While trying to clear the prison of walkers and searching the place for supplies, Hershel is bitten by a walker, and Rick is forced to amputate his lower leg. They soon find several surviving inmates who have been trapped in the cafeteria. While Rick, Daryl and T-Dog help clear a separate cell block for the inmates to live in, most of the prisoners are killed, allowing the remainder — Axel and Oscar — to join Rick's group. A walker breakout later splits everyone up: T-Dog is bitten in the struggle and sacrifices himself to save Carol, while Lori goes into labor and insists that Maggie perform an emergency Caesarean section to save the baby. The operation kills Lori, and Carl is forced to shoot her to prevent reanimation. After several days of mourning, Carl and Rick name the baby Judith.