Montreal is in the grips of one of its summer heat waves, when searing temperatures have a way of making its residents cast aside their better judgment. A young twenty-something works the night shift at a call center, her only company the disembodied voices of the customers who call in to complain. She spends her night off drinking with her friend Louis at "their" bar, while her successful boyfriend sleeps. His career allows her the pleasures of his spacious, modern condo, a new existence.