As Col. Mitchell arrives at Gen. Landry's retreat, where the rest of the team are to bond with the General, the others are diverted to fight an invisible man-eating creature on another planet, and to determine if it is connected to the Ori. As Mitchell and Landry try to co-exist alone together, a storm washes out the only accessible roadway to their cabin. They soon find they must also fight off the same type of invisible man-eating creature that SG-1 has been checking on off-world.
Dr. Weir accompanies Sheppard's team on a mission to an advanced civilization with a past history with Atlantis. They uncover a connection to an earlier discovery in the city.
Flower's new litter ventures outside for the first time to learn about the world they inhabit in the Kalahari, but since they are Flower's pups, just about all of the adults are on guard.
Shawn and Gus attend a Civil War reenactment rehearsal for the sheer pleasure of watching Lassiter have a nervous breakdown as he runs it, but when a scripted death turns real they end up donning uniforms themselves in order to find the murderer and perhaps prevent another.
Abs grows increasingly jealous of Greg's relationship with Nina, and is upset when his girlfriend organises a house party without telling him. A patient inspires Guppy to start living his life to the full, while Tess and Sam argue about Mike's return from hospital.
