While attending a high-society charity gala, billionaire Oliver Queen and brilliant socialite Kit Marlowe find themselves trapped when high-tech mercenaries lock down the museum to steal a priceless emerald. Slipping away to don their alter egos, the Green Arrow and the sleek, agile Cat Woman are forced into a reluctant partnership to eliminate the threat. Neither hero realizes that the fiercely witty, lethal ally fighting by their side is the exact same person they were just flirting with at the party.