After Suyin and her twin sons are captured while infiltrating Kuvira's camp to take her out, Kuvira agrees to a duel with Korra to decide control of Zaofu. Korra is outmatched until she enters the Avatar State, but collapses as her dark spectre reappears to her. Opal, Jinora and her siblings save Korra and flee with her. Meanwhile, Varrick and Bolin escape after Varrick improvises a spirit vine bomb. Kuvira forces Zaofu's citizens to submit, and has Baatar Jr. and Zhu Li continue work on the vine superweapon.