Shaun lives a supremely uneventful life, which revolves around his girlfriend, his mother, and, above all, his local pub. This gentle routine is threatened when the dead return to life and make strenuous attempts to snack on ordinary Londoners.

Two strangers become dangerously close after witnessing a deadly accident. On a beautiful cloudless day a young couple celebrate their reunion with a picnic. Joe has planned a postcard-perfect afternoon in the English countryside with his partner, Claire. But as Joe and Claire prepare to open a bottle of champagne, their idyll comes to an abrupt end. A hot air balloon drifts into the field, obviously in trouble. The pilot catches his leg in the anchor rope, while the only passenger, a boy, is too scared to jump down. Joe and three other men rush to secure the basket. But fate has other ideas...