In the summer of 1989, a group of bullied kids band together to destroy a shapeshifting monster, which disguises itself as a clown and preys on the children of Derry, their small Maine town.
Twenty-seven years after their first encounter with the terrifying Pennywise, the Losers Club have grown up and moved away, until a devastating phone call brings them back.
A young couple take in their 2 nieces only to suspect that a supernatural spirit named Mama has latched itself to their family.