One chance meeting. A night that changes everything. The Kennedy sisters, Molly, Alex and Sam, have a Christmas tradition - a night out, just the three of them, sisters together. Lewis Stone can't face the work Christmas party, but as he's one of the bosses, he has to put in an appearance. He leaves as soon as he can politely get away, ready for the holidays to begin. When Lewis Stone meets the Kennedy sisters, a train of events begins that engulfs them all. One sister is left fighting for her life. One sister is left fighting for her marriage. And one sister is hellbent on revenge...