GoGo Sentai Boukenger

 is the 30th series in Toei's Super Sentai series, a metaseries of Japanese tokusatsu programming. It is the first installment to be broadcast in 16:9 aspect ratio. It premiered on February 19, 2006 at 7:30 JST on TV Asahi's 2006 "Super Hero Time" programming block with "Kamen Rider Kabuto". Its footage was used in the American series, "Power Rangers Operation Overdrive" in SD, while the original footage was dubbed into Korean for the South Korean series, "Power Rangers Treasure Force".
Plot summary.
Powerful relics known as Precious have started to appear throughout the world. However, the various Negative Syndicates wish to take the Precious for themselves and utilize them for evil means. To make sure that the Precious do not fall into the hands of the Negative Syndicates, the Search Guard Successor Foundation has developed its own special operations team, the Boukengers, to do battle and collect some of the more dangerous Precious.
Characters.
SGS.
The collects the Precious with help from the Boukengers.
They are led by Mister Voice, who serves as a liaison to the main S.G.S. headquarters, and they are assisted by Makino Morino, who is the technical specialist of S.G.S. and creator of the GoGo Vehicles, the mecha of the Boukengers.
Negative Syndicates.
Not much is known about the other than they are individual organizations whose respective leaders, foot soldiers, and monsters try to steal the Precious and use them for evil deeds. This is the first series to have separate factions of villains since "Seijuu Sentai Gingaman". Although there is some animosity between the member groups, they occasionally work together to serve their own ambitions.
Precious.
 are the dangerous treasures that the Boukengers and Negative are fighting over. For a relic to be considered a Precious, it must be physically or technologically superior to any current human (or SGS-related) technology. The hand-held Accellular henshin devices use their half-open Scan Mode to determine the "Hazard Level" of each relic; the higher the number, the more important or dangerous the Precious is. Each relic that ends up in the Boukengers' hands is placed into a box that materializes from a card-like device.
The 30 Sentai Encyclopedia.
The is a series of featurettes that air at the end of each episode (Task) of "Boukenger" that honors each of its predecessors in the Super Sentai franchise, starting with Task 4. They looked back at each of the 29 previous teams, referencing various items within the older shows, and later on, wearing the costumes and using other props from the series, such as the "civilian" clothing. After covering themselves, they start a new series of segments called the that cover milestones from the "First Gattai Robo" to the "First Sixth Hero" and then from the "First Multi Gattai" to the "Extra Heroes", playing an insert song from the respective series. The show's final segment (Task 48) covered its successor "Juken Sentai Gekiranger".
"The Greatest Precious".
Episode 18 of "Kamen Rider Kabuto" showed a short preview for the Boukenger movie, and starting with Task 19, Boukenger showed its own previews. The movie is titled , which occurs between Tasks 28 and 29. It was released in theaters on August 5, 2006. A mysterious being called awakens, announcing the Precious to whoever gets to her first, causing a 5-way confrontation between the Boukengers, Gajya, the Jyaryu, Dark Shadow and the Questers. Even Satoru's father, is involved. But as Satoru learns while dealing with his father ideals, the prize is more treacherous than the path to it.
"GoGo Sentai Boukenger vs. Super Sentai".
As with "Gaoranger" before it, "Boukenger" features a team up special featuring five past Sentai members and a new hero, entitled .
The villain for this special, , abducts all of the Boukenger, save for Eiji, into an alternate dimension. A warrior known solely as Aka Red contacts Eiji on Earth and provide him a book that holds the names of all of the past warriors in it. He goes out and seeks the assistance of Tsubasa Ozu (Magi Yellow of "Mahō Sentai Magiranger") at a boxing match, Tekkan "Tetsu" Aira (Deka Break of "Tokusou Sentai Dekaranger") while he is undercover, Asuka (Abare Black of "Bakuryū Sentai Abaranger") taking care of his daughter on Dino Earth, and Nanami Nono (Hurricane Blue of "Ninpuu Sentai Hurricaneger") at her concert. They then fight Chronos who has purchased Goodomu Engines from Gajya in order to bring back Furabiijo from "Hurricaneger", revive Duchess Org TsueTsue from "Hyakujuu Sentai Gaoranger" and Sorcery Priest Meemy of "Magiranger". While the remaining Boukengers are in the other dimension, they meet up with Hikaru (Magi Shine of "Magiranger") and Smoky, his cat genie, and try to find a way to escape. When Chronos turns Meemy, TsueTsue, and Furabiijo into a staff-like Precious with a Hazard Level of 666, Aka Red becomes a vessel for the six Sentai Spirits and allows for DaiVoyager to become . The events of the movie take place between Tasks 42 and 43.