Shaun of the Dead

In the Crouch End area of London, 29-year-old sales advisor Shaun is disrespected by his colleagues, does not get along with his stepfather Philip, and is dumped by his girlfriend Liz after he promises to improve himself but is unsuccessful in making decent plans for an anniversary date. At his favourite pub, the Winchester, a heartbroken Shaun gets drunk with his slacker best friend Ed. At home, Shaun and Ed's roommate Pete complains of a bite wound from a mugger and berates Shaun, telling him to stop leaning on Ed and to get his life together.
The following day, a zombie apocalypse has overwhelmed London. Shaun and Ed do not notice until they encounter two zombies in their garden, whom they beat to death after throwing household implements and Shaun's vinyl collection at them. They devise a plan to rescue Shaun's mother, Barbara, and Liz, and then wait out the crisis at The Winchester. They escape from a now-zombified Pete by stealing his car. They pick up Philip, who has been bitten, and Barbara. Ed deliberately crashes Pete's car so he can drive Philip's Jaguar Series 3. They fetch Liz and her flatmates David and Dianne. Philip reconciles with Shaun before becoming a zombie.
Forced to abandon the car and their weapons, they sneak through the neighbourhood and briefly encounter a group led by Shaun's friend Yvonne, with each group member resembling a doppelgänger of the other group's members. Shaun defends Barbara from a zombie and impales it with a swingball pole. After imitating zombies to bypass a horde and reach The Winchester, Shaun and Ed argue when Ed wastes time on his phone, attracting the zombies' attention. David panics and breaks a window of The Winchester, forcing Shaun to lure the horde away using himself as bait before returning.
As the group takes refuge inside The Winchester, Shaun discovers that the zombies followed him, and Ed inadvertently attracts them by playing on the pub's slot machine. While fighting the pub's zombified owner, Shaun discovers that the Winchester rifle above the bar is functional, which he had previously debated with Ed. Barbara reveals she was bitten and dies after giving Liz and Shaun's relationship her approval. David attempts to shoot Barbara, but Shaun stops him, accusing David of hating him and being in love with Liz. David denies this, but Dianne admits she knows it is true. Barbara becomes a zombie, forcing a distraught Shaun to shoot her, and further fighting with David ensues.
The zombies break through a window of the pub and pull David out, devouring him alive. In a foolish and senseless attempt to save the dead David, Dianne opens the doors to the pub and rushes into the horde of zombies using David's severed leg as a weapon. With the doors now open, zombies pour into the bar. The zombified Pete reappears in the horde and is shot by Shaun after biting Ed. Shaun, Liz, and Ed take cover behind the bar; Shaun sets the bar on fire with alcohol to serve as a barrier. The three take refuge in the cellar, where they realise they only have two bullets left. Shaun and Liz contemplate suicide while Ed volunteers to sacrifice himself. Upon discovering a small lift for kegs that opens onto the street, Shaun and Liz exit the pub while Ed buys them time by staying behind with the rifle. Yvonne arrives with the British Army, who gun down the zombies before taking Shaun and Liz to safety.
Six months later, normality has returned but the surviving zombies are now used for free unskilled labour and entertainment. Liz has moved in with Shaun, who keeps the now-zombified Ed chained up in his garden shed. Shaun plays video games in the shed with the somewhat-sentient Ed.