“Charles” (Dany Boon) is a Parisian taxi driver at the end of his tether when he is given a job on the other side of the city. He can’t really be bothered but it’s a lucrative fare so he sets off to pick up “Mme. Keller” (Line Renaud). She’s 92 years of age and is reluctantly having to move into an old folks home. As they proceed to navigate the busy traffic their initially monosyllabic chat becomes more intensive, intimate and confidential as she reveals some fairly private and traumatic details of her life thus far whilst he reciprocates over a few coffees, a run in with the gendarmes,…