Van, Wendy, Carmen 99, and Joshua arrive at Duel Park, a town famous for holding armor battle events. The favorite contender in the current tournament, the B-1 Grand Prix, is an agile armor called Brownie piloted by a young girl named Priscilla. Giovanni, an armor manufacturer of the Rail Work Corporation, hires Van to defeat Priscilla in a duel while trumpeting Dann of Thursday as one of their own products. While Joshua is stuck in the hospital, Van, Wendy, and Carmen 99 trail Priscilla to discover her weaknesses but instead find out she would her prize money to support a group of orphans. Van and Priscilla meet in person before their fight and find they share a great deal in common. They agree to have a fair battle the next day with each side fighting with full strength.