New England in the late 1920ties. The two friends Randolph Carter and Joel Manton spend a sunny autumn afternoon on an old far off 17th century cemetery. An argument arises, concerning the horror stories written by Carter. Especially one story draws Manton's sarcasm: The Unnamable... Encouraged by the atmosphere of the old burial ground Carter tells his friend about the origin of that novel. He claims it to be based on a more than 200 years old local legend. Manton listens with increasing fascination, while darkness descends on the cemetery. And suddenly both of them become part of the legend as well...