Follows a French chef who divorces his Japanese wife and loses all custody rights of his three-year daughter. He decides to quit his job and becomes a taxi driver, in hopes to find his daughter and her mother while driving across the city.
Lea is a young girl on the brink of death. She begins her final challenge, a thesis that seeks proof in the belief that happiness can be multiplied, as can the feelings of sadness, loneliness, and misery. Unfolding the research, she discovers the "Werther Effect", a phenomenon that creates a negative domino effect. She turns to her work on a project which will achieve the oppos...