At the age of sixty-five years old, Anselme is a retired nurse. Like everyone else, he's his fair share of difficulties, and now he aspires to live a quiet life with his wife, Constance. But this year promises to be different than those before it, and a plot revolves around him: a mysterious invitation is sent to him, asking him to come to Paris during Christmastime. The invitation says nothing about the purpose of this journey, which will lead him from discovery to discovery, and which will radically change the rest of his life.