Paul Château-Têtard, a 45-year-old bachelor from the best of Parisian nobility, has – for the first time in his life – to take the Metro, and even buy a ticket. It is with extraordinary luck that the beautiful young Ava happens to be sitting at the counter: a spark ignites and wedding bells begin ringing in the distance.

A meek, mild-mannered man begins to suspect that his beautiful wife is poisoning him after he realizes that his acute stomach aches occur only after he eats at home. As a result, he investigates the death of his predecessor-- his wife's first husband.

What happens when a man and a woman share a common passion? They fall in love. And this is what happens to Jean-René, the boss of a small chocolate factory, and Angélique, a gifted chocolate maker he has just hired. What occurs when a highly emotional man meets a highly emotional woman? They fall in love, and this is what occurs to Jean-René and Angélique who share the same handicap. But being pathologically timid does not make things easy for them. So whether they will manage to get together, join their solitudes and live happily ever after is a guessing matter.