At the height of summer, 18-year-old Cécile is relaxing by the French seaside with her father and falling in love with her new boyfriend. The arrival of her late mother's enigmatic friend turns her world upside down.
Jean is a "slow" man, he builds his life around his anxieties, and considers himself unsuited to life in society. He lives with Alex, who is a "fast" man. Passionate about aerodynamics and eurodance, Alex lives fast and asks himself as few questions as possible. One morning, he receives a fast friend, Lou, at their place, while Jean had also planned to receive a slow friend, Caroline.
June 2042. The organic farm of L'aiguille is bustling with activity. Midsummer is near, announcing, like every year, the end of the compulsory ecological service. It is time for Nour, Léon and the others to say goodbye and to choose the life they wish to lead.
France, 1963. Anne is a bright young student with a promising future ahead of her. But when she falls pregnant, she sees the opportunity to finish her studies and escape the constraints of her social background disappearing. With her final exams fast approaching and her belly growing, Anne resolves to act, even if she has to confront shame and pain, even if she must risk prison to do so.
Antoine - a grieving loner - spends his days in a cafe on Place Clichy watching people. Every day, he sees a woman he calls Albertine get out of the subway and go to the movies. Today, he takes it upon himself to talk to her. Thus began Antoine's down-going.
How do the 18-30 years old live their sentimental relationships? Between France and Germany, crossed and complicit glances on the plural faces of love relationships.