Once described as a young professional tennis prodigy, Thomas never had the career in the game he had hoped for. At 37, he decides to return to the French Open at Rolland Garros, in spite of his declining physical fitness and shattered knee. Although his wife Eve and mother Judith advise him to give up on his unlikely ambition, Thomas obsessively perseveres. He will have to face his own demons as well as the intense competitive qualifying rounds to reach the tournament and eventually face a young tennis genius who disturbingly reminds him of his younger self.