"Freedom is life's great lie , and one you accept that, you will know peace" - LOKI

In the vast universe, there is a magnificent, perfect kingdom which is the abode of the Gods,

 a happy peaceful kingdom without war called "Piltover" but that is what we hear but we must have not heard of the kingdom's dark formative history.

Once upon a time, when the kingdom of darkness formed and they began to wreak havoc, destroying everything they saw.

with their leader the demon lord Surtur,  there was an alliance between two Asgardian tribes. Jotunheim joined hands to stop and imprison them under the Asgard.

" After that, they established into two kingdoms living together peacefully and happily ".

until one day, hela who is called the God of death, Odin' daughter, hates these peaceful moments but her strength is not enough strong and...

she remembers that her dad once telling about the demon named Surtur, who made the Ragnarok doomsday is locked up at Asgard and wanted to wage war with Jotunheim but had been prevented by Odin

So she decided to release Surtur, the demon who has been sealed for a long time to ravage Jotun but thanks to two legendary weapons, Odin's Mjolnir hammer and the Casket of Ancient Winters, Farbauti prevented.

"After that, two legendary weapons of Odin and Farbauti were destroyed at the same time with the death of Farbauti, it was too painful for their people.

They thought it was Asgard's fault and wanted to execute Hela but Odin refused and just locked Hela in the dungeon. Jotunheim's people just accepted because they know they can not win Odin in a fight."

" Since then, the two kingdoms have no longer met each other again. The alliance was disintegrated and two tribes were dragged into the millennial battle...

... with the flame of

 war spreading 

out over

 the

 Nine Realm." 

"5000 years later, Thor and Loki, gradually grew up to become the new pillars of both kingdoms, but the battle was flared up again that year.

Thanos who was an invader, knew that Asgard was holding the space stone, immediately intended to overthrow it.

He found a way to put a spy into Asgard and contacted him to rescue Hela so that he could ask for Hela's help to steal the stone for him".

After Hela escaped, she tried to summon the old demon-Surtur that overthrew Asgard before. Because there were no defenses so Asgard was defeated easily, Odin was killed while he was sleeping. In that urgent situation, Thor had no choice but to try to find Loki-the princess of the giant ice to ask for help. 

Because the only way to beat Surtur is through the combination of Thor's hammer and the Casket of Ancient Winters like what Odin and Farbauti did before.

When Loki heard what Thor said, she was kind of confused, hesitated, and thought...

" Should I help him or not? "

but because of her people's safety so she had to agree to help Thor to defeat the demon and Hela.

Loki knows how to prevent that but unluckily,  in the battle 5000 years ago, the Casket of Ancient Winters was broken with Mjolnir hammer and has not been recovered until now. 

If you want to get the legendary weapon back, you have to go to the place where that weapon was made and ask that blacksmith to make it again, and that person is Eitri, the king of the Dwarf who made Caskets of Ancient Winters and Mjolnir before.

But things are not that easy, the place where EItri at is extremely dangerous. The only way to recover is to find and come to 

Nidavellir, where the Dwarves live.

People said that two weapons were also created  there but no     one has been there 

         for  5000 years.