GoGo Sentai Boukenger is the 30th series in Toei’s Super Sentai series. It ran from February 19th 2006 – February 11th 2007 for 49 episodes. It is the first instalment to be broadcast in HDTV. Its footage was used in the American series Power Rangers Operation Overdrive, while the original footage was dubbed into Korean for the South Korean series Power Rangers Treasure Force.
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.
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.