Season 1 of Fifteen-Love premiered on July 21, 2023.

Teen tennis prodigy Justine suffers a career-ending tragedy on the world stage at the French Open. Five years later, she seems to have healed, but her peace is shattered when her old coach Glenn returns home, having won the French Open with a new player. When Justine makes an explosive allegation against Glenn, the stately world of tennis is rocked by lies, deceit and a desperate bid for control.