Sarah (Kate Winslet
) was made for better things: married to a jackass in the corporate branding business, the grad-school dropout is a stay-at-home mom to her adorable but demanding little daughter Lucy. At the local playground, she is forced to partake of the inane gossip of a trio of fellow mums—but their routine is broken by the sudden return of Brad (Patrick Wilson
), a hunky house-husband they've dubbed the Prom King.
Despite being married to gorgeous Kathy (Jennifer Connelly) and dad to cherubic Aaron, Brad is going through his own malaise. Struggling to pass the bar exam, he is distracted by the lure of a touch-football night league. In an effort to scandalize the meddling mother hens, one day Sarah approaches Brad in the playground…
Based on the novel by Tom Perrotta.