"The Days Between" Puzzle

 

"Find the Story Line" Puzzle

R  CVA  IZIVBSL  ZC  RWZBK  AZFOT  JV  R  CRNE VDMURBWV  CZE  MZFBSOVLL  TRKL  ZC  OZBVLZIV INLVEK.

Substitute the letter F for C, but not C for F.

ANSWER

A FEW MOMENTS OF AGONY WOULD BE A FAIR EXCHANGE FOR COUNTLESS DAYS OF LONESOME MISERY.