"Four Hundred Fifty-One" is a reference to the novel "Fahrenheit 451," written by Ray Bradbury. The title signifies the temperature at which paper supposedly ignites and burns. The story is set in a dystopian future where books are banned, and "firemen" burn any that are found. The protagonist, Guy Montag, is a fireman who becomes disillusioned with his society's anti-book stance. As he encounters individuals who cherish literature, Montag begins to question the oppressive norms around him, leading to a journey of self-discovery and rebellion against censorship.