The Chapmans do Christmas the way they do everything: impeccably, expensively, and with the unshakable belief that good lighting can conceal bad blood. Their annual Christmas card may look picture-perfect, but behind the polite smiles theres a storm brewing. This year, at their grand lakefront cottage on Mackinac Island, a snowstorm traps generations of Chapmansand their schemesunder one roof.

Chris Chapman is on the verge of losing everything: his fathers trust, his role at the helm of the family business, and his wifes respect. Kat Chapman is already fed up with hosting her critical, stuck-up in-laws and their impossibly inflexible holiday traditions. Her solution? Invite her working-class parents born and bred Islanders for Christmas, much to the horror of the Chapmans, whose rule that We do not share Christmas with other people is about to be broken.

As the snow piles up, so do the grievances: their childrenfiercely li