In this contemporary light adaptation of French writer Guy de Maupassant's tantalising short story entitled "Idylle", the unusual environment of a sweltering railway passenger carriage provides the ideal backdrop for an extraordinary relationship between two perfect strangers. As the train zooms past visually overwhelming landscapes towards its final destination on a bright sultry day, the delicate intrigue and the burgeoning intimacy will soon lead to an unforeseen act of empathy and kindness.