Drama starring Ewan McGregor and Eva Green as a couple falling in love against the backdrop of a catastrophic neurological pandemic. Michael (McGregor), a chef at an upmarket Glaswegian restaurant, lives a fairly normal life, bantering with his work colleague, James (Ewen Bremner), and putting in long hours in the kitchen. Things begin to change for Michael when a strange, seemingly unstoppable, virus begins robbing human beings of their sense faculties - beginning with the sense of smell. Epidemiologist Susan (Green) arrives in Glasgow to study the virus, which has other strange effects such as increase in emotion and a tendency towards melancholy feelings. As the pair gradually fall under the spell of the virus, so they fall under the spell of each other, and witness together the apparently inexorable deterioration of the human world.