Light in the Dark (The Legend of Korra)

Tenzin and his siblings, Kya and Bumi, find Korra, Mako and Bolin wounded and unconscious in the Spirit World.

Tenzin, Kya, Bumi, Mako, Bolin, Desna and Eska defend Korra's body from dark spirits attacking them.

Korra and Mako decide that they have end their romantic relationship as it does not seem to work out for them, instead opting to remaining friends by doing their last kiss, but always be there for each other.

[1] IGN's Max Nicholson rated the episode 9/10, praising the action, the plot, and the music, but criticizing the scene where Jinora's spirit shows Korra that Raava is still within Vaatu, noting that "it really doesn't make that much sense".

Club, Emily Guendelsberger agreed with Nicholson that some scenes didn't make sense, but still described it as a finale that is "sort of a perfect encapsulation of the second season".