King masterfully explores how fear can shape and control our lives. It, the monstrous entity, feeds on fear, growing stronger with each terrified scream and desperate plea. The novel delves into the psychology of fear, showcasing how it can paralyze, manipulate, and ultimately destroy. The Losers Club, however, discovers that confronting their fears, no matter how terrifying, is the only way to break free from its grip.

The narrative juxtaposes the carefree nature of childhood with the harsh realities of adulthood, highlighting the bittersweet transition from innocence to experience. As children, the Losers Club faces the horrors of It, their youthful naivety shattered by the realization that evil exists, even in the most unexpected places. Years later, as adults, they must confront not only the resurrected terror of It but also the lingering scars of their childhood trauma, discovering that some wounds never truly heal.

The Losers Club, a group of ostracized and bullied children, finds solace and strength in their shared experiences. They become each other's family, their bond of friendship a beacon of hope in the face of unimaginable darkness. King emphasizes the power of unity and camaraderie, suggesting that even the most terrifying challenges can be overcome when faced together.