Back in airbending island, Tenzin and his family were in a great fear, the white lotus searched everywhere for Jinora but couldn't find anything.
Suddenly the door opens and Mako, Korra, Bolin and Asami came in.
"Do you have any news about Jinora?" Tenzin said.
"No, the police searched every corner in the city for that guy." Mako replied.
Tenzin sat in sadness, his little girl is nowhere to be found; and then a voice from their back said: "you seem quite said air nomad, allow me to reveal what you are searching for."
Everyone turned back only to see the very man who rebirthed Vatuu and kidnapped Jinora.
"YOU" Korra shouted "you will pay for what you have done." Then she tried to lay some punches on Arvak, to everyone's surprise the punch went through him.
She kept trying to punch him again and again, and then he said: "you couldn't touch me the first time, so why keep trying again? And they call me mad."
Tenzin then stood and said in anger: "where is my daughter? What have you done to her?"
Arvak replied: "oh the child? Well she served her purpose and I no longer needed her."
Everyone was shocked, and then Arvak made a huge laugh and said: "oh the look at your faces, I'm just kidding, she is fine and did not serve her full purpose yet, and even if she did I won't kill her."
Tenzin was relived, knowing that his daughter is alright, and then Arvak said: "whatever your question will be I will answer it, but if Jinora already asked it before I will be brief in the answer."
Korra said: "who are you why are you here why have you brought back Vatuu why have you-"
"Woah woah woah I am not one of those weird people who can take too many questions at once, one by one please." Arvak said.
"Who are you?" Korra asked, Arvak replied: "I am your almost complete opposite avatar, my name is Arvak."
"What do you mean by compete opposite?" Bolin asked.
"It means that many of the primary things Korra have I have it in opposite, as you can see the skin and hair color, she is a woman I am a man, I bend the four dark elements while she bend the four light elements and she is weak I am strong." Arvak answered.
Korra said angrily: "how come I am weak while you are strong?" he then asked her: "can you destroy a wall of steel with your fist without bending?"
Korra replied: "no?" Arvak said: "then I am stronger than you."
"Like you can do that." Korra said mockingly. Then Arvak weakly hit a wall with his hand and it crumbled to dust, everyone was shocked by that strength.
Tenzin then said: "dark elements? There are other elements?"
Arvak replied: "smoke shadow blood and ice are the elements that are called dark, and before you ask no smokebending is not airbending and no bloodbending and icebending are not waterbending, and I already explained this to Jinora so I will not explain it, just know that they are different."
Mako asked: "why have you brought back Vatuu and why you kidnapped Jinora?"
Arvak replied: "well the short term of the story from where I come from being able to bend the four elements is something you are born with, but our numbers are declining so I thought I could use Vatuu to continue our survival."
"Vatuu will corrupt you and use your body to destroy the world." Korra interrupted.
"You think I am unaware of what happened to your uncle? Why do you think I kidnapped Jinora?" Arvak replied "Jinora is unlike anyone else in the world is completely full of light energy, I needed half of that energy so I can rebalance Vatuu and bring him back to his balance caring nature, and I plan to do the same thing with Ravaa." Arvak replied.
"Why?" Korra asked.
"Because it won't work unless both spirits are balanced, I already have the dark energy from Ravaa what I need you to do is deliver Ravaa herself to my home." He replied.
Tenzin then spoke: "you attacked us and kidnapped my daughter, why should we trust you?"
"Well I did this because I had to do my 'bad deed of the week', it's like my good deed of the week and it has to be something big, If I didn't have to do it I would have come to you and said: can you give me your daughter for an experiment to bring balance back to the dark spirit?" Arvak replied.
Korra said: "when you attacked us you acted like that cool mysterious evil person, now you are acting like a nice weird guy, explain that."
Arvak sighed and said: "look my personality is divided to 6 parts: the good, the bad, the balanced, the dramatic, the mad and the warlike; on that the bad and the dramatic were working together under my orders, all of my personalities are controlled by me, except the mad, for madness is unpredictable."
Then Korra said: "and if we choose not to help you?"
Arvak replied: "well then you are both threatening the safety of my homeland and you are disrespecting a great hero who saved the world from ending, also helping me will not go unrewarded for I will give you knowledge and power you never knew it existed, and the sooner we are done the sooner your daughter can return to you air nomad."
Tenzin then said: "we don't have any other choice then, let's hope we do not plaque the world with our work."
"Good." Arvak said "and now listen, here is the map, now I need you to go throw the old way to the lands I came from, it's on the other side of the planet, you will face 5 dangers on the way each will improve you, better you, strengthen you, you are on your own in the first 2, I will guide you to the rest, then you will reached a city where are nations are united under one banner, almost same as this one."
Bolin said: "or we can just use the same way you came here whatever that was." He doesn't know about the shadow portal for he wasn't there.
Arvak said: "if it was that easy I would have extracted Ravaa right with Vatuu and my plans were complete, I saw what's coming next and I need strong people to protect me and the avatar while we are charging the energy to Ravaa and Vatuu, for we will be attacked by a group of people each one is as powerful as you avatar in the avatar state."
"Now before I leave is there any other questions?" he added.
Korra said: "about bloodbending, it is a feared a forbidden art here, what makes it normal at your world?"
"well when you waterbend the water inside someone's body this act can cause the water to escape which is quite a painful process, the bloodbending we have is the same thing as I did when I first came, you were paralyzed yet unharmed, also bloodbending is the best way of healing others better than waterbending or firebending due to it relying on physics rather than chi magic." He replied.
Mako then asked in surprise: "firebending has a healing style?"
Arvak sighed again and said: "the more I speak with you people the more I am convinced that I know more about you than you."
Tenzin asked: "will Jinora be alright?"
"I can't know everything about the future but rest assures I will guard your daughter, I will even teach her and strengthen her so she can help defending us, she is talented in both mind and body, but mostly mind, so I will focus more on strengthen her body." Arvak replied.
"Now if you excuse me I will be going, I have to check on my brother and your daughter." He said "oh and by the way, after you pass one of the five dangers rest for 3 days before going to the other, this will give you time to regain your strength and more time for me to train Jinora, and don't bother bringing any other people with you, only the five of you will be enough, any extra handed will be useless."
Then he moved his hand and the shadow of a table formed another portal that he went through.