Watch IT: Welcome to Derry

As a dense fog engulfs the town – and General Shaw pushes ahead with his mission – the Hanlons, Rose, Dick, and the kids must work together to save Derry.

When a group of masked vigilantes descends on the Black Spot, the ensuing carnage unleashes long dormant forces. In the tragic aftermath, Rose and the Keepers assess their losses, Leroy vows to leave Derry, and Dick helps uncover another crucial artifact.

Plagued by increasingly dark visions, Dick learns the Black Spot is integral to Charlotte's plan. Meanwhile, Will faces his parents' disapproval for walking into a dangerous situation, Marge stands up to the Patty Cakes, and Lilly's behavior grows erratic.

After learning the truth about General Shaw's operation, Leroy decides to move his family to the base for safety. While the tribal Keepers strategize how to contain increased aggression in town, the military descends on Neibolt Street, and the kids head into the sewers with their own objective.

As the kids face increasingly terrifying experiences, Charlotte attempts to advocate for Hank, and General Shaw escalates his efforts.

General Shaw pushes ahead with his mission, ordering Leroy and Pauly to escort Dick Hallorann on an aerial search for a new dig site; Rose attends a tribal meeting; Ronnie, Lilly, Will, and Rich attempt to get visual proof by conjuring an Orix?.

After joining Leroy at their new house in Derry, Charlotte is left with a strange feeling while running errands in town, and Will is teased on his first day of school. Later, Lilly faces pressure from all sides about what really happened at the movie theater, and Ronnie worries about her father's fate.

Four months after their classmate's sudden disappearance, Teddy, Phil, Lilly, and Ronnie vow to figure out why so many kids have gone missing in Derry...and why they've each been experiencing strange phenomena. Meanwhile, Major Leroy Hanlon arrives at Derry Air Force Base, where he navigates a chilly reception from some of his fellow airmen.