Power Rangers S.P.D. is the thirteenth season of the television series, Power Rangers, and is based on the 28th Super Sentai series Tokusou Sentai Dekaranger. The season shares its title with the Korean dub of Dekaranger in South Korea, whose logo is similar to the American series. The initials in the title stand for "Space Patrol Delta"; in Dekaranger, it stood for Special Police Dekaranger, and in the South Korean dub of Dekaranger, it stood for Special Police Delta. The season debuted on February 5, 2005 as part of Jetix, originally airing on ABC Family; beginning with "Messenger, Part 2", the series moved to Toon Disney. A Japanese dub of S.P.D. started airing on Toei's digital television channel in Japan starting in August 2011, with two DVD volumes released on August 5. It features the original Dekaranger cast members dubbing over the voices of their American counterparts (with the exception of Mako Ishino, who is the series' narrator rather than voicing her character's counterpart). Plot The story takes place in the year 2025, 21 years after the events of the previous season when Earth has welcomed alien beings to live peacefully with the human race. However, peace is short-lived as the planet-conquering Troobian Empire and its leader Emperor Gruumm turns its destructive attention to Earth. When the Earth's first line of defense, the Space Patrol Delta A-Squad mysteriously vanishes without a trace, the protection of the planet falls to their replacements: B-Squad Rangers Schuyler "Sky" Tate, Bridge Carson and Sydney "Syd" Drew, under the guidance of their dog-like alien commander, Anubis "Doggie" Cruger. When reformed thieves Jack Landors and Elizabeth "Z" Delgado join the team as the Red and Yellow S.P.D Rangers, tensions threaten to tear them apart. With the alien threat growing stronger every moment, the Rangers must put aside their differences and go into action as one. During B-Squad's attempts to hold off Gruumm's forces, including pictomancer Mora and bat-like Broodwing, the team discovers that Cruger used to be a Ranger himself, but fled to Earth and swore off his Ranger duties after failing to protect his home planet and the apparent death of his wife Isinia; however, attacks by old enemies reveal that Isinia is actually alive and in Gruumm's clutches, forcing him to return to active status as the Shadow Ranger. They are later joined by the Omega Ranger, a future version of a kid they