Pierre, a pigment geneticist, likes to be invisible to others. When he finds himself forced to work with Lucie, the girl he secretly loves, he panics. He develops a chemical that, instead of helping him cope with his shyness, actually makes him invisible. However, it is thanks to his invisibility that Pierre gradually becomes visible again to Lucie.

Paris 1942. François Mercier is an ordinary man who only aspires to start a family with the woman he loves, Blanche. He is also the employee of a talented jeweler, Mr. Haffmann. But faced with the German occupation, the two men will have no other choice but to conclude an agreement whose consequences, over the months, will upset the fate of our three characters.

One day, Jean-Louis discovers that his heart has stopped. He is not dead, can walk and talk, but his heart is no longer beating. With the help of his wife and a friend, he tries to understand the origin of this mystery.

Loudun, October 1947. Leon Besnard and Marie celebrate their eighteenth wedding anniversary with friends and Ady, a former German prisoner they have "adopted". A few days later, Leon dies. Louise, a friend of the couple's and probably Leon's mistress claims that, on his deathbed, the deceased told her that Marie was poisoning him. The whole town soon condemns Marie and she is arrested and sent to jail. Did she really kill Léon as well as twelve other members of her family as she finds herself charged with?

A driven American exec heads to Paris determined to acquire a champagne brand by Christmas — and accidentally falls for the heir to the bubbly empire.