A nervous Dr. McKay (David Hewlett) arrives in the botany lab with the intention of asking Katie to marry him when an alarm sounds throughout the city. It immediately activates a quarantine shut down, trapping them in the lab with no way out. McKay suspects that either a highly infectious disease has triggered the city’s automatic self-protection system, or he may have gone overboard with his efficiency upgrades.

But help is not imminent. Lt. Colonel Sheppard (Joe Flanigan) and Teyla (Rachel Luttrell) have been simultaneously locked in McKay’s lab, Colonel Carter (Amanda Tapping) and Dr. Zelenka (David Nykl) are confined in the transporter, and Dr. Keller (Jewel Staite) and Ronan (Jason Momoa) are stuck in the infirmary. With communications and other vital systems affected, each believes the other will be coming to their rescue, unaware that they all share the same predicament.

Text by Stargate.MGM.com