It was adapted into a theatre production by the author in 2003, with Danielle Darieux and Anny Duperey in France, Jacqueline Bir in Belgium, and Rita Lafontaine in Quebec, and then to the movies in 2009 with Michèle Laroque who was Grandma (Granny Pink or Mamie-Rose).

A young boy named Oscar lives in the hospital, because he suffers from a type of cancer.

All turn a deaf ear to the word "death" with the exception of Mamie-Rose, formerly called "Strangler of Languedoc" thanks to her skills as a wrestler, which she confirms that he will die.

She invents a game that will allow him to enjoy his life at any age: every day for him will have a duration of 10 years.

During his "adolescence" (the next day), Oscar admits to Mamie-Rose that he really likes a girl named Peggy Blue.

Unlike the rest of the hospital staff, Mamie-Rose does not deny that Oscar has only a short time to live.

Unfortunately, by hiding behind the door, Oscar has secretly heard the conversation and is disappointed by his parents, whom he calls cowardly.

During the night Oscar hears noises and thinks that Peggy is being tormented by ghosts, so he gets up and goes to her room in order to protect her.

Oscar and Peggy decide to sleep in the same bed, much to the horror of the medical staff who discover them in the morning.

Later in the day, Mamie-Rose brings Oscar to a chapel, where she shows him that death doesn't have to be a moral suffering.

Oscar, with the help of his friends Bacon, Einstein, and Popcorn, sneaks into Mamie-Rose's car.

Then comes a difficult time that begins for him, because Peggy's operation is successful and she goes home with her parents.

In addition, God tells him his secret: "to look at the world every day as if it were the first time" and Oscar follows his advice.

The story has been translated into Afrikaans, Albanian, German, English, French, Low German, Basque, Belarusian, Bulgarian, Castilian, Chinese, Korean, Croatian, Danish, Estonian, Finnish, Georgian, Greek, Hungarian, Icelandic, Italian, Japanese, Latvian, Lithuanian, Maltese, Dutch, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovenian, Swedish, Swahili, Czech, Turkish, Uzbek, Ukrainian and Armenian.

The author created a film in 2009 (Oscar and the Lady in Pink) based on the novel with Michèle Laroque in the role of Mamie-Rose.