Stella is a clumsy, cynical, imaginative sixteen-year-old who after a car accident, which changes her life and in which a dog is also involved, she is convinced that her years should be counted like those of dogs. For this reason she thinks she is now a hundred years old and with the help of her best friends, Nina and Giulio, she draws up a list of all the things she wants to do before she dies. But the chance encounter with Matteo, a shy and introverted peer, will totally upset her perspective.