5-09: The Ascent

Garak, Worf, and Bashir search for Enabran Train after intercepting a distress call from the notorious Cardassian. Meanwhile, Dukat visits Ziyal on DS9.

Odo tries to help a sick infant Changeling without assistance from Dr. Mora, the scientist who studied him. Meanwhile, Kira gives birth to Keiko and Mile’s baby.

Quark, broke and desperate, joins his highly successful cousin Gaila in selling weapons, despite apprehension.

Keiko O’Brien becomes possessed by a Pah-wraith.

The Defiant crew encounter their own multi-generational descendants on an alien planet.