MateoisacompletelynormalboywhoonenightrealizesthathemustasserthimselfasthedefenderofdreamsagainsttheNightmareKingandhisnastymachinations.Butarehisdreamsreallyjustdreamddd?Becauseinthemorning,creaturesfromMateo’sdreamaresuddenlyrealityandalotelsehaschanged.