 Deep Space Nine expects a deuridium shipment for Kobliads. They are a dying race who need the material to extend their life. Kira and Bashir respond to a distress call of a Kobliad ship on fire. On board they meet Ty Kajada. She s escorting a dangerous prisoner, Rao Vantika. Ty claims he set the ship on fire, something he has managed to do many times. Bashir wants to rescue him against her advice, but is unable to do so. He confirms Rao died, but Kajada isn t convinced. She claims Vantika faked his death many times and she has the feeling this time isn t different. No one on Deep Space Nine believes her, until suddenly all memory banks are purged. Meanwhile a new security officer, George Primmin, is assigned. Odo dislikes him and the feeling seems mutual.