Détour follows the story of a young girl's tricycle, which gets lost as a French family leaves home for their summer holiday. After becoming accidentally separated from the family, the tricycle is propelled on an unbelievable journey of seemingly unplanned events through the stunning French countryside.
Oscar Mongoût, a gourmet cannibal, burns with love for a neighbor in his building, the very vegetal Miss Carrot. But this passion seems destined to fail: she is vegetarian, while he has a severe case of vegetable phobia. Things take a drastic turn the evening she invites him to dinner.