The inhabitants of Atlantis begin to suffer ill effects when the planet’s whale population begins migrating to the island city, bringing an unexpected harbinger of doom.

SG-1 tries to defend a planet from the Ori by hiding its people in another dimension. Vala attempts to convince her husband Tomin of the Ori’s true motives.

After Richard Chubby dies, Little Chubby comes to town to take over the family business. While Earl tries to cross an item off his list he learns the true meaning of sacrifice.

Jake believes something more is wrong after Eric doesn’t return from New Bern. Jake and Hawkins go to New Bern and discover that Jericho is in danger.

Cheng offers to exchange the nuclear component for Audrey’s life. Jack gains Chloe’s covert cooperation, but their plans are dashed when Morris stumbles on to the operation.Wayne gives Daniels an unpleasant ultimatum, but his fragile health soon tips the balance in the vice-president’s favor.

The Atlantis team goes against orders to try and save Atlantis from Replicator control — and to rescue General O’Neill and Richard Woolsey, who are trapped in the occupied city.

The Atlantis team goes against orders to try and save Atlantis from Replicator control — and to rescue General O’Neill and Richard Woolsey, who are trapped in the occupied city.

When the team finds Merlin himself, they must help him complete the Sangraal weapon before Adria and her Ori forces can track them down.

As Earl and Randy work to cross No. 29 on the list “Harassed A Reporter,” Randy gets tired of being in his brother’s shadow. In an attempt to distance himself from his brother, Randy realizes the true power of karma and the media.

Jake finds that Hawkins has not been honest with the residents of Jericho about his past and holds him at gunpoint for answers.