Dark fantasy play by Ray Bradbury about best friends Jim Nightshade and William Halloway and their nightmarish experience with a traveling carnival that comes to Green Town, Illinois in the early 1960s. The carnival's leader is the mysterious 'Mr. Dark', who seemingly wields the power to grant the townspeople's secret desires. In reality, Dark is a malevolent being who, like the carnival, lives off the life force of those it enslaves.