Why Won't They Tell Me?

Everyone knew all along that Four was the Terrible Twos, but the square himself didn't. Ever since the first night, everyone agreed not to say a word to him about it. But what if he found out in a way that wasn't meant to happen? What if he felt betrayed and lied to? Now everyone must overcome their differences and work together as the new enemy, simply known as 'Darkness' arises!