Read more about Pennywise at: Wikipedia
Official Site: Warner Bros
It (also referred to as Stephen King's It) is a 1990 horror television miniseries based on the novel of the same name. The story revolves around an inter-dimensional predatory life-form that is simply referred to as "It", which has the ability to transform itself into its prey's worst fears, which allows it to exploit the fears and phobias of its victims while also disguising itself when hunting. The main protagonists are "The Losers Club", or "The Seven", a group of social outcasts who discover "It" and vow to destroy him by any means necessary. The series takes place over two different time periods, the first when the Losers first discover "It", and the second when they're called back to defeat "It", who has resurfaced. "It" mostly takes the form of a sadistic clown called "Pennywise the Dancing Clown", which it uses to lure children and kill them. It takes place in the fictional town of Derry, Maine, USA.
It aired as a two-part television movie on November 18 and November 20, 1990 on ABC, and loosely follows the plot of the novel. The miniseries was filmed in New Westminster, British Columbia.
In the opening scene, a little girl named Laurie Ann rides her bike down the street happily singing "Itsy Bitsy Spider". Her mother notices it is about to storm and tells her to come inside. Before Laurie Ann goes inside, she hears children laughing in the distance and then a clown giggle. She turns and spots a clown standing in her backyard. The clown plays around with the girl trying to lure her to him. The film then cuts to Laurie Ann's mother looking for her and then finding the girl dead in the backyard. This prompts Mike Hanlon to call across the United States looking for his six friends, telling them that the murderer has returned and their promise from years ago that if "It" ever comes back, they will fight it again. The film then is told in flashback.
Bill, Beverly, Richie, Eddie, Ben, Stan, and Mike, a group of outcasts, form the "Losers Club", a group of social misfits who meet and form a tight-knit friendship. Each of the children individually encounter the child-killing clown haunting their hometown of Derry, Maine. The monster, which the group later collectively name "It," usually appears as the thing the child victim most fears before taking the form of Pennywise the Dancing Clown. Their separate encounters are later fortified when they all witness Pennywise reach out from a photograph in an album owned by Mike Hanlon, one of the children.