Aye aye aye, I'm here with my first published AU, Different Worlds.
Emmett awoke, coughing and gasping for breath. He didn't understand. The last time he was awake, a beast had been in pursuit of him near Bricksburg (I've seen TLM2, but I don't want it to be Apocalypseburg.) Then, he had been sitting on the surface of some strange, planet. He didn't know where the others were. He stood up. Something about this place didn't seem.. right. It appeared to have a gloomy, rocky surface, followed by a plain of grass collided in. There were trees, and other mysterious plants as well. "I'm coming to find you guys!" Emmett called, surprised at the echo his voice caused.
Later, Benny, Unikitty, Lucy, Batman, and Metalbeard crashed onto different worlds.
Things were about to get weirder.