Stargate Atlantis Episode Details!!

The first plot information has arrived at GateWorld for "Harmony," an episode set to air late in Stargate Atlantis's fourth season. Executive producer Joseph Mallozzi has implied, but not yet confirmed, that the title character and lead guest star will be played by 12-year-old actress Jodelle Ferland.

Ferland played Adria at 7 years old in the SG-1 Season Ten premiere, "Flesh and Blood." Her long list of film and television credits also includes Masters of Horror, Supernatural, Smallville, and the 2006 film "Silent Hill."Colonel Sheppard and Dr. McKay visit one of their favorite planets, where they toast a long-time trading partnership.

Their hosts are two beautiful and charming princesses, Flora and Mardola. As palace guards stand nearby, they thank John and Rodney for their life-saving medicine, their warnings about a Wraith culling, and their kindness. The two men are obviously smitten.But as they prepare to leave, the women bring themselves to ask for a favor.

They have a younger sister named Harmony, who they introduce to Sheppard and McKay. With their mother the Queen having recently died, Harmony is the heir to the throne -- but before she can be crowned, she must pass a dangerous test and trek a day's walk into the forest, to the Temple of Laros. While others are generally not permitted to assist in the rite of passage, the concerned older sisters wish Sheppard and McKay to protect Harmony from danger without the others knowing.

They are happy enough to oblige, and head into the woods with the strong-willed girl. It isn't long before danger finds them -- but it's not lions, tigers, or bears. There is a Genii contingent on the planet, and the deadly soldiers seem to be trying to prevent Harmony from ascending to the throne. Though they manage to take out some of the men, they must stay on the run ... and keep young Harmony alive.

The Genii's motives are not solely their own, however. They are working with one of Harmony's sisters.Guest characters include Harmony, Flora, Mardola, the Genii Field Captain, Genii soldiers, and various palace guards and villagers."Harmony" will go before cameras soon, and will premiere on SCI FI Channel in the U.S., Sky One in the U.K., and Movie Central in Canada early next year. Season Four premieres September 28 on SCI FI!