Félicie Milliner (Elle Fanning) is an 11-year old orphan who dreams of becoming a ballerina and performing at the Opéra de Paris. Fleeing Brittany for the French capital, Félicie becomes a pupil at the Opéra ballet school but a rigorous audition process looms and stiff competition in the form of Camille (Maddie Ziegler, real-life dancer and star of Sia’s video clips).
Spoiled Camille has perfect technique and doesn’t like to lose but also bears the burden of extremely high expectations. Daunted at the prospect of not losing her place at the ballet school, Félicie is taken in by a mysterious mentor, Odette (Carly Rae Jepsen) who helps her tap her passion and nurture her self-belief. With her devoted friend, would-be inventor Victor (Dane Dehaan) in tow, the two embark on amazing adventures together to realise their dreams in the wondrous City of Light.