Simon, who has been unemployed for too long, decides to rent out his basement to make ends meet. His tenant, Lucie, works in Toronto during the week and is only in his basement on weekends. Clever Simon then rents the same basement to Philippe who works in Sherbrooke on the weekends and is only there during the week. Simon forgets to mention Philippe's existence to Lucie and vice-versa.
Everything moves along smoothly until, naturally, Lucie decides not to go to Toronto one week...