Sarah Pierce (Kate Winslet) and Brad Adamson (Patrick Wilson) decide to take their adulterous affair to the next level and run off together. They plan to rendevous at the playground where they first met.
Sarah makes it there but Brad stops along the way to try skateboarding for the first time in his life, which results in an accident that sends him to the hospital.
Feeling stood up, Sarah goes back home and ends the affair.
In a subplot, May McGorvey (Phyllis Somerville), the mother of pedophile Ronald James McGorvey (Jackie Earle Haley), dies of a heart attack.
Despondent and plagued by the neighborhood vigilante Larry Hedges (Noah Emmerich), Ronald castrates himself.