Set eight months after the death of writer Cass Horsely following a series of intrusive articles in the press, Vitality tells the story of six of his closest friends attending an event to celebrate his life.

England has been overrun by a pandemic with no apparent cure. As the infection continues to spread, safety – for a lucky few – looms in the form of a damaged 747 set to seek solace abroad. It’s only once the plane is airborne that the survivors discover the infection made it onto the flight with them.