Commander Sisko is kidnapped by Smiley, an alternate version of Chief O'Brien and is brought to a mirror universe to assume the identity of his alternate self, Captain Sisko, the leader of the Terran rebels whom has been killed and aid the Terran rebels in overthrowing the evil Klingon/Cardassian Alliance and Commander Sisko must convince the Alliance scientist Jennifer Sisko, an alternate version of his deceased wife, to side with the rebels and help bring down the Klingon/Cardassian Alliance.