Opening image: Liz confronting Shaun in the Winchester, about how he always brings Ed around when she wants to be spending time alone, and that he never takes her anyplace new.
Theme stated: Does “It’s not the end of the world” count as a theme?
Setup: Shaun spends the day at work, bumps into Yvonne, realizes that he forgot to book the table for his fancy dinner out with Liz.
Catalyst: Liz dumps Shaun.
Debate: Shaun and Ed go out drinking, come back, Shaun resolves to sort his life out, goes around to the store next morning, Ed spots the ‘drunk girl’ in their garden, and they realize that she’s a zombie. Shaun calls around, and realizes that Liz and his mum are both in danger.
Break into Two: Shaun comes up with a plan – and then makes a few revisions in it as Ed points out problems.
B story: Is this Shaun’s friendship with Ed?
Fun and games: Fighting zombies, duh.
Midpoint: Philip dies and becomes a zombie in the car – everybody else escapes, but they now have no blunt objects and no transportation, and they’re far from safety.
Bad guys close in: The zombies are crowding thick around the Winchester, and Shaun volunteers to lead them astray to get everybody else in.
All is lost: Ed gives them away to the vampires, Shaun has to shoot his mother, the zombies get David and Di, Pete bites Ed and the Winchester goes up in flames.
Dark night of the soul: Sitting in the cellar, Shaun and Liz really talk as they wait for the zombies to come in and get them. Shaun volunteers to shoot Liz and then himself, when it comes to it, rather than see her be eaten alive.
Break into three: Shaun realizes that they’re on a lift, and he and Liz decide to go back up to street level to take their chances.
Finale: Yvonne arrives with the army, rescuing them.
Final image: Liz has moved in, she and Shaun both seem happy – and Shaun slips out back to play video games with zombie Ed.