Embracing her role as the Shadow Guardian, Selene begins uncovering the secrets of the stone tablet and the mystery behind the guardians' supernatural abilities in hopes of escaping her endless hellish time loops where not even death offers her release.

With the help of Dier, the former first prince who is also the Moon Guardian, Selene successfully absorbs the Water Guardian Alexei's powers. Now, her sights are set on her next target—the Earth Guardian. But she soon finds out that the knight hailed as the strongest in the world won't be so easy to take down...