The Last Airbender: Legend of Korra

Korra loses her Earth, Water, and Firebending. Avatar Aang later appears to Korra and uses Energybending to give Korra her bending back and give her the Energybending ability. Korra also manages to Airbend and enter the Avatar State for the first time.

Lin's bending is restored.

Amon and Tarrlok are presumably killed when Tarrlok blows their escape boat up.

It is revealed that following The War in the original series, Katara was responsible in making Bloodbending illegal.

It is revealed in this episode that Amon is the eldest son of Yakone, and thus Tarrlok's brother. It is also revealed that Amon is actually a Waterbender and a Bloodbender and his real name is Noatak.

Following the attack on Republic City, Captain Saikahn, the White Lotus sentries, and the Republic City council (minus Tenzin) are all captured by the Equalists. Tenzin and his family, Korra, Mako, Bolin, and Asami all go into hiding.

Lin loses her bending.

Pema gives birth to a son who is then named Rohan.

Amon takes away Tarrlok's bending in this episode.

Although seen in many flashbacks at this point, this episode marks the first time Aang, Sokka, and Toph have been heard speaking in this series. This episode also reveals that Sokka was a member and the chairman of the United Republic Council in the past.

Tarrlok is revealed to be the son of Yakone, a criminal that the past Team Avatar dealt with prior to the series.

The Metalbending police who were captured in "And The Winner Is..." are saved and revealed to have lost their bending.

Captain Saikhan becomes the chief of police following Lin's resignation.

Tarrlok is revealed to be a Bloodbender. He is the third known Bloodbender following Hama and Katara of the original series. He is also the first to be able to bloodbend without the need of a full moon.

Lau Gan-Lan's line "No! Not my Cabbage Corp!" is a reference to the Cabbage merchant from the original Avatar series who would often say "No! Not my cabbages!"

It is revealed that Lin possesses the ability to sense things in the Earth like her mother did.

It is revealed that Tenzin and Lin dated in the past.

This episode is the first to show a glimpse of Sokka, Toph, and Aang at an older age.

When Korra has flashbacks of Aang's life, he is missing his tattoos in some scenes.

When Amon takes away the bending of Lightning Bolt Zolt, Zolt swings at the air in a failed attempt of fire bending in the same way Fire Lord Ozai did after Aang took away his bending and says the exact same lines.