"Lannister, Baratheon, Stark, Tyrell: They're all just spokes on a wheel," Daenerys Targaryen is heard saying at the start of the sneak peek. "This one's on top but then that one's on top and on and on it spins, crushing those on the ground."
"I'm not going to stop the wheel," she concluded. "I'm going to break the wheel."
For more from the trailer, watch the video below. The new season of "Game of Thrones" will premiere on April 12 on HBO.