"Fifty Shades" is a series of erotic romance novels written by E.L. James. The story follows the relationship between a college graduate, Anastasia Steele, and a wealthy businessman, Christian Grey. The series explores themes of love, power dynamics, and BDSM, as the couple navigates their complex emotional and physical connection. The first book, "Fifty Shades of Grey," was published in 2011 and quickly gained popularity, leading to two sequels: "Fifty Shades Darker" and "Fifty Shades Freed." The series has been adapted into a successful film franchise, further expanding its reach and influence in popular culture.