Oscar is ill and no one, especially not his parents, will tell him what he already knows: that he is dying. Granny Rose, the oldest of the 'ladies in pink' who visit Oscar and his fellow patients, makes friends with him. She suggests that he play a game: to pretend that each of the following twelve days is a decade of his imagines future. One day equals ten years, and every night Oscar writes a letter to God telling him about his life.