Ellen, the last of the five Cylons, returns to the fleet with Boomer.  Tigh is happy to have Ellen back but things get a little strange when she finds out that Caprica Six is pregnant with his child.  The rest of the five determine that they will vote on returning to the Baystar and leave the fleet now that they know a Cylon/Cylon pairing is possible.  However, things get more complicated as Caprica's baby dies unexpectedly.  Meanwhile Baltar is back with his group and learns that a woman has more or less taken his place in charge.  He also learns how things are on the ship with food and supplies when he tries to help the less fortunate.