A teenage member of the Jem'Hadar comes to the station to seek assylum. Captain Sisko and a legate's elderly, former benefactor get trapped in a turbolift. Chief O'Brian dies but then is revived by advanced aliens.
Dr. Bashir's greeting is interpretted as a marriage proposal by Keiko , prompting a Federation investigation. A routine phyisical exam reveals that Major Kyra is dying. Chief O'Brian dies but then is revived by advanced aliens.
Rom and Keiko's ex-spouse develop a friendship. When normal Federation protocols fail to achieve desired outcomes, Quark decides to employ a more Cardassian approach with a chief. Chief O'Brian is duplicated in a transporter accident and one of him dies.
Genetically enhanced Klingons attempt a coup on their homeworld and the Federation asks Dr Bashir to lead negotiations. Betazoid fleets advance on the wormhole. Chief O'Brian dies in a vision by the Kai.
Major Kyra and Major Kyra get trapped in a turbolift. Captain Sisko gets a new program for the holosuite and tries to keep the content a secret. Chief O'Brian dies but it turns out to have been a dream.