Emily (Audrey Tautou) had an unfortunate childhood in the eyes of others. When her father gave her a health check, he found that her heartbeat was too fast, so he concluded that she had heart disease. Since then, Emily has been isolated from school. Later, because of an accident, her mother died suddenly in front of her. All this did not affect Emily's open-minded optimism about life. In 1997, the death of Princess Diana made her feel the loneliness and fragility of life. Emily has since started a series of plans to help others, including the autistic and depressed elderly neighbor, the vegetable stall clerk who was mean to the boss, the old landlord who lost his childhood utensils, and the coffee shop colleague who was frustrated in love. But she never expected that Nino (Mathieu Kassovitz), a clerk in an adult video store, would become her thorny target. Emily started a ridiculous alternative plan...