Lindsay Moore and Julia Herrick have been best friends and neighbors for over a decade. Their families vacation together and their children, all similar in age to one another, are inseparable. But on the eve of their tenth annual Halloween party, co-hosted naturally by Lindsay and Julia, Lindsay announces she’s relocating her family down south in a week in order to accept a lateral, not promotional, position at work. For Julia, even more surprising than the pending move is her sudden, heavy reliance on Lindsay’s husband, Denny, for emotional support as her friendship with Lindsay begins to crumble.