Major Kira and the fiercely ambitious Kai Winn have never seen eye to eye, but when Cardassian renegades invade Deep Space Nine, determined to capture one of the sacred Orbs of the Prophets, the two women must put their differences behind them and agree to work together to preserve both the Orb and the safety of everyone on board the station. Especially as Captain Sisko and the crew of the Defiant are unable to come to Kira's aid: they are too busy teaching an entire alien world how to fight back against a vicious and deadly invasion - even if they have to break the Prime Directive to do so!