Attack on Titan: 4x29

The Final Chapters Part 1

After the Marley Undercover Operation, Eren finally awakens the power of the “Founding Titan.” With the ability to see fragments of the future granted by the Attack Titans, he chooses to activate the “rumbling”: a plan to destroy the world outside of Paradis Island. The march of countless Colossal Titans, who had hid within the walls of Paradis Island, annihilates all life in their path.