The novel jumps back and forth between the late 1950s and the mid-1980s. The former time period recounts a particularly memorable Summer for the "Losers Club," which is a hodgepodge of young misfits looking for acceptance. The season marks the group's first encounter with It, while the later period marks their final showdown.
Since the novel is so vast in content, the adaptation will be split into two films, according to Variety. The first film will focus on the club's childhood, and the second will focus on their final battle as adults.