4 Days joins Derek and Mark in the days leading up to Valentine's Day over the course of a few years- charting the blossoming of a friendship in to something much more enduring as time goes on - and challenging both to question who they thought they were and who they truly want to me. Painting a moving picture of how an abiding friendship can sometimes lead to love - and how we sometimes have to wrestle with our own demons to find their true self, 4 Days is achingly romantic and delicate.