Atlantis wants to trade food with the Genii, a simple civilization who turn out to be not so simple. They are planning a nuclear attack against the Wraith.

Two hurricanes are approaching Atlantis and an evacuation is necessary. The leader of the planet taking them in tells the Genii about the situation.

While Teyla and Ronon investigate the mysterious death of Major Lorne, the Genii Ladon Radim contacts Atlantis. He wants to trade a ZPM for weapons supplies.

Sheppard and his team are lured to a planet and are soon put on trial for crimes against the people of the Pegasus galaxy. In flashbacks, the three judge tribunal recounts the indictment against them including the re-awakening of the Wraith and the various missions where at least a few, if not more, innocent bystanders were killed. Sheppard does his best to argue that on balance, fewer were killed by their presence than would have been the case if they had never been there. A least one of the judges is clearly determined to find them guilty while a second seems far more sympathetic. It's left to Richard Woolsey, who has now joined them, to plead the rest of their case. A lawyer by profession, Richard clearly knows how the game is played and focuses on that third judge.