Needing a stabilizer on the Defiant, Captain Sisko orders Chief O'Brien to have part in place on the ship when he returns in three days. Unfortunately, O'Brien won't be able to procure the item for three weeks. Overhearing the conversation with the Captain is Nog, who offers to use a bit of his Ferengi sense of commerce to find the stabilizer for the Chief in three days. Elsewhere, Odo receives a message from his Cardassian contact, long thought dead, to rendezvous with him at their usual location. While there, Odo discovers that his contact is in fact dead. In his place stands Weyoun, who has decided to defect to the Federation.