You can save hundreds of lives. Or the one that matters most... The atmosphere on board the first non-stop flight from London to Sydney is electric. Celebrities are rumoured to be among the passengers in business class, and the world is watching the landmark journey. Flight attendant Mina is trying to focus on the passengers, instead of her troubled five-year-old daughter back at home - or the cataclysmic problems in her marriage. But soon after the plane takes off, Mina receives a chilling anonymous note. Someone wants to make sure the plane never reaches its destination. They're demanding her cooperation . . . and they know exactly how to get it. It's twenty hours to landing. A lot can happen in twenty hours...