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After accidentally obliterating the school, Gumball and his schoolmates had been transferred to Amirath Academy to meet a principal that has a lingering hatred toward the kids and a nasty plan in waiting. Meanwhile, Nicole sensed something's wrong in the atmosphere. After Darwin became mysteriously mean to Gumball, the blue cat and the others are determined to find out what's going on. But what they don't know is that once they find out, there's no turning back.