Sixteen-year-old Sofie is a dreamer, an artist and a romantic. When she goes on exchange to Paris, she is expecting magnificent adventures of the heart and mind. Yet France isn't what she imagined. It's cold and grey, and she finds speaking another language exhausting. Sofie's more homesick than lovesick. But then her host sister, Delphine, and fellow artist Olivier show Sofie a different side of Paris, and she starts to question her ideas about art, beauty and meaning. About everything. There's truth in what her best friend, Crow, has been saying all along: the earth is in crisis and people need to take notice. But what can one girl do? Will Sofie be able to find the courage to fight for change? This One is Ours is a call to action for anyone who feels helpless about the state of the world, as well as an ode to all the tiny beautifuls that make it worth saving.