Today, leaders of the Sunrise Movement are advising on climate policy up and down the ballot, and helping to secure elections for politicians committed to acting on climate. But back in 2018, they were just a small group of activists, disillusioned by the failures of the adults in Congress to fight the climate crisis. It took collective action, and decentralized movement-building, to gain power. This is the story of the inciting incident for the movement of a lifetime—the sit-in at Nancy Pelosi’s office in November 2018—told through the voices of six different activists on the ground that day.