The Witches head to the Britannian coast for a mix of training and relaxation while Charlotte E. Yeager tunes up her Striker Unit, chasing her dream to break the sound barrier with it. While messing around, Charlotte's friend Francesca Lucchini accidentally damages Charlotte's Striker Unit and hastily puts it back together. When Charlotte uses this unit during a surprise Neuroi attack, she is able to break past Mach 1 and destroy the enemy.