Episode Title:Skeletons in the Closet.Episode Description:Korra and her friends hide in hobo camp underground until Iroh's fleet arrives; but the fleet is promptly disabled by Equalist mines, aircraft, and torpedoes. Korra saves Iroh from drowning, and they regroup with the others. Korra and Mako go in search of Amon, while Iroh, Bolin and Asami sabotage the Equalist airbase to prevent the sinking of a relief fleet under Commander Bumi, Tenzin's older brother. Korra and Mako discover Tarrlok captive in Air Temple Island, and he reveals that Amon is his brother, Noatak - both sons to Yakone, who fled to the North Pole after his escape from Republic City. Meanwhile, the assault on the Equalists' mountain airbase goes poorly when the attackers fall prey to an electric fence.