IT: Chapter Two will follow the grown-up versions of the Losers, and will give a darker storyline to one of the members of the club – namely, Mike.
[SPOILERS for IT: Chapter One ahead.]
We’ve brought that to Mike, by the end of those 30 years Mike has figured out the Ritual of Chüd.”
IT: Chapter One, directed by Andrés Muschietti (Mamá) and with Bill Skarsgard (Hemlock Grove) as Pennywise the Dancing Clown, covers half the novel, following a group of kids self-named as “The Losers’ Club”.