It all begins at the end of the twentieth century. On New Year's Eve, 2000, 24-year-old Arthur gets together with his girlfriend, Lucie. She really wants a baby, but he doesn't feel ready to be a father yet. During the long night of wild partying, Arthur will go through unsettling experiences. He'll be projected seventy years ahead in time and find himself face to face with an old man who claims he's his son… This seventy-year-old son shows him his house, family, life and Arthur discovers what Paris has become in 2070. By showing him this unexpected future, his son hopes to convince Arthur to have a child.