 McKay discovers two Wraith cruisers in the vicinity of Atlantis, but it seems they are not heading to the city. In fact he thinks they are firing on each other. Soon Atlantis faces a bigger problem. Meanwhile on Earth, Stargate finds out the Goa uld have infiltrated in the highest ranks of The Trust, a terrorist organization. They have a planted a bomb in Atlantis, set to go off the next time a gate is established between Earth and the Pegasus galaxy. As the Atlanteans are preparing a status update to be sent on short notice, time is of the essence. It s impossible to send them a message through the gate, the Daedalus is in between the two worlds, but they are too far away to relay the message.