Kid Icarus: Of Myths and Monsters is a game published and developed by Nintendo for the Game Boy, and was first released in November 1991. The game was not released in Japan. It is the only sequel to the original Kid Icarus (released for the FDS in 1986 and NES in 1987) and it uses the same engine as Metroid II: Return of Samus (similarly to how the original Kid Icarus used Metroid's engine).
One night, Palutena had a horrible dream that an army of demons attacks her beloved Angel Land. The worried goddess summons a soothsayer so that the soothsayer could explain the meaning of her dreams. The soothsayer explains that it was not just a dream and it would soon come to pass that a demon named Orcos would attack Angel Land. Palutena then summons Pit and explains the crisis to him, she commands him to obtain the Three Sacred treasures so that he would be worthy of using them when Orcos finally attacks.