Patrick is a tenacious lawyer specializing in environmental law. France is a schoolteacher who becomes an activist after her husband develops cancer from exposure to a pesticide. Mathias is an ambitious lobbyist for a chemical corporation.

The government is asking Eiffel to design something spectacular for the 1889 Paris World Fair, but Eiffel simply wants to design the subway. Suddenly, everything changes when Eiffel crosses paths with a mysterious woman from Arun's past.

Victor, a disillusioned 60-something whose marriage is on the rocks, opts to relive the week of his life when, 40 years earlier, he met his true love through a company that allows customers to return to the time period of their choosing.