A series of murders prompts Mike Hanlon to suspect that the supernatural menace that he and a group of friends battled as children has returned. He begins to call his friends to remind them of the oath they swore: if It returned again, they would come back to Derry to do battle again.
A demonic creature haunts a small New England town and is killing its children. Seven outcast children band together to destroy the monster and form a friendship that will last a lifetime.
30 years after being destroyed by a group of children, Pennywise is back. The group return as adults to face the evil one last time.