Soélie, a young motocross prodigy, sees her dreams of success shattered by an accident. She now devotes herself to training her brother, Michael. When he is recruited by TMAX scooter racers for a high-profile heist in Paris, Soélie must overcome her fears to save him.
Owners of a once-popular motocross circuit, the Carella family are now on the verge of bankruptcy. Terrified of getting back on a motorcycle since the death of her mother, former racer Soélie (Ava Baya) redoubles her determination to pull her family out of this crisis. Now a mechanic, she is particularly concerned about her brother Michael (Riadh Belaïche), who has fallen into dangerous company. To save him, Soélie is forced to modify TMAX scooters for Elyas (Jalil Lespert), a gang leader on the verge of a dangerous robbery...