Kitsune to Sensha to Ougon to

A fox-girl named Foxy, part of a mercenary group still in debt, travels with her companions in a tank to earn money through trade and search for a valuable legendary plate. They rescue a kidnapped girl named Leona, who possesses knowledge about the plate and has trading skills. Leona invites Foxy to join her caravan as a reward. The caravan is soon attacked and destroyed by mercenaries. Seeking revenge, Leona chooses to confront her enemies through economic means rather than military force. While a trading battle takes place on the commodity exchange, Foxy and her friends, on separate assignments, acquire key information that could influence the market.