At the beginning Snow Leaf got along, but then Swante didn't agree with Branch's choices so he started to disrespect him. An equal amount of people were on each of their sides. Since Swante disrespected Branch, he started to disrespect him back and they eventually started a war.
The people started to destroy the polar bears land, so the Steezo (Polar Bear) tells the people that if the war continues he will create a blizzard, and he wont stop the blizzard until the people end the war.
The people didn't believe that Steezo would start a blizzard, so they continued the war, and eventually Steezo started the blizzard.
Steezo tells Snow Leaf that they have 1 year to stop the war or he will make the blizzard so bad their crops and animals they hunt will die out, and eventually everyone will die.
Both Swante and Branch agree that they should end the war and respect each others choices. Both of the leaders go up and tell Steezo and they all agree and Steezo stops the blizzard.
In the end Snow Leaf came back together and Swante and Branch both worked together and respected each others choices and they never had another war.