The past storyline

Starting from the earlier story:

Basically, Nick and Tate have been feuding for a very long time, and neither of them have ever succeeded in defeating the other completely. The Tatians have very strong magic, but the Nickians always find some way to get back up. Nick created a sattelite that would turn Tate and Evan evil, but he was stopped by Teddy and Tate. After lots of fighting, in the 'second part' of the saga, the Chaos Tree managed to free itself, and brought Evil Nick back from Nick. When the Chaos Tree was freed, the Tatians and the Spirit Tree all fought against him and his forces. The good side was almost defeated, the chaos tree was sealed back.