Sophie, a 25-year old fashion illustrator, is about to spend a lonely summer in Montreal. She has no plans, no close friends around and no boyfriend until she hears about an apartment-swapping site: switch.com. As luck would have it, she finds herself in a duplex in Paris, complete with a view of the Eiffel Tower. But, then she meets with a rude awakening as the police discover a headless corpse.
