Years have come to pass since the Great Uniter was brought to justice and order in the world was restored. Korra moved in with Asami even though she is barely home they both enjoy the time they spend together. After her many years fighting the great evils that threatened the world she now fights smaller battles. Three years after the battle that completely reshaped Republic City she decided to take on a political role and now works with president Raiko and Bataar Sr. in an effort to rebuild Republic City to its former glory. Even now it is still a long way from what it used to be, which is,considering all that happened, no wonder.
Asami remained in her position as CEO of Future Industries and is helping with the reconstruction of the defenses and infrastructure of Republic City. She created a class of warships for the United Forces, named the Hiroshi Class. She also perfected the mech suits and air fighters. In her role she was also tasked with preparing the United Republic for future attacks from others and also from attacks with super weapons such as Kuvira's spirit weapon.
Bolin married Opal after years of living in Zaofu and working as the head of security, he also helped rebuild the domes that protected the city before Kuvira removed them while conquering the old Earth Kingdom. He put many of Asami's new machines to use in Zaofu and now works with Suyin Beifong, who was elected first president of the Earth Republic, on spreading Zaofu's advances in technology to the rest of her lands. Bolin also helped drive out the bandits that roamed the lands of the Earth Republic.
Mako took up his old position as a detective in the police of Republic City but has since been promoted to the Manager of the Security of the newly established Union of Democratic Nations, an alliance formed between the United Republic and the Earth Republic. He ensures that the military forces both nations supply to duty for the alliance are working together and not against each other.
The people are slowly getting used to the new peace and life is calming down. Many have started to reach for the stars and find their future in Movers or the realm of music. Others have slowly made their fortunes by creating large companies to replace the old ones destroyed in the battle for Republic City. However not all seek peace. Some powerful men with the money to fund a private army seek more fortune in a war between the Union of Democratic Nations and the Fire Nation and Water Tribes. They are influencing the new president Qin and distributing propaganda. Rallying the people and setting the mood for a war spanning the entire world. They want to risk everything the avatar stands for to make money for themselves.