Legolas met Glorfindel during an ambush on orcs and entered the "hidden city" Gondolin. However, unexpectedly, Luye is the adopted son of Maeglin's biological father, Io, and comes to investigate the mystery of Io's murder of Yarisil three years ago. At the same time, Maeglin is also investigating the whereabouts of Legolas, because his father may have passed the secrets of the Starry Night Palace to Legolas. And how does all this involve the history of the First Age and the fall of Gondolin? Can Glorfindel and Legolas, the combination of light and darkness, escape the curse?