Luna's powers to walk into dreams comes with an important responsibility: to protect the kingdom from fear and nightmares and give her subjects guidance. However, after Sombra's reign, as well as the disappearance of the Crystal Empire, Equestria is in a time of uncertainty, loss, and terror. How will the increasing number of nightmares take its toll on Luna? How will she be able to face the fears of others when her own dark dreams start to become a reality?