The Ineffiable Pair

Its been two years since the angel Aziraphale and demon Crowley had saved the planet Earth from certain unimaginable doom.
However, times are changing for these two unlikely friends, for Aziraphale has been sent on a three year mission to the middle east in order to save and protect innocent families being raided and threatened by ISIS.
With every day that passes and with every unobtainable phone call, Crowley is becoming more and more desperate to see his friend, and with every moment that passes alone there is a certain longing cursed upon the demon, causing him to question his feelings towards Aziraphale and even himself.
With so much on the line, will Crowley and Aziraphale make it to the other side as friends, or perhaps something more...?