Lucie, born and raised in a loving family in Monaco, grew up on her dad's karting track in Nice, watching the young talents he trained, not knowing that in time two of them, Charles and Pierre, would become her second family. When her father tragically died in a car accident, they made a promise to each other to be the male presence Lucie would need for the rest of her life. But as people grow and change, will this brotherhood continue forever?