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Etienne Seguin is not yet thirty. Originally from Drummondville, he has been living in Montreal for several years. Etienne has just taken a job teaching literature at a college in his hometown. Anyway, he'll be travelling to and from work on Highway 20, a one-way trip of about an hour, so he can listen to the radio and, most importantly, forget about his recent divorce! Soon, Etienne spots a hitchhiker, always in the same place at the same time as he drives by. Why not give him a lift so that the road doesn't seem so monotonous? Immediately, the boy realises that the passenger knew him as a child, but Etienne suffers from amnesia and has no memory of his childhood. He has a question: who is this passenger whom he has taken to giving rides? And what did they do together in their younger years?