Sisko plans to take Jake on a field trip to a small, quiet planet on the other side of the wormhole so Jake can work on a science project. Jake asks if Nog can join them since Nog also has a science project to do. Quark seizes on this opportunity to tag along, ostensibly as Nog's guardian but with his own plans for convincing Sisko to allow Quark to advertise on the station's monitors. The field trip is interrupted though by Eris, who is escaping from the Jem'Hadar - members of the Dominion. Soon Sisko, Quark and Eris find themselves prisoners of the Dominion while Jake and Nog try to get back to DS9 to get a rescue party.