César is 12 when his older sister Lou is the victim of sexual assault. In the changing rooms of his fencing club, the only standard that matters is violence. César wishes he could measure up but may not be armed for the fights to come.

Young drug dealer Pablo and his sister Appoline bond over an online game called Darknoon. Pablo falls for Night, neglecting his sister. While Appoline finishes the game, Pablo and Night become embroiled in a dangerous gang conflict.