Powerful artifacts emerge worldwide, coveted by villainous Negative Syndicates. The Search Guard Successor Foundation assembles the Boukengers, a special ops team, to battle and protect these "Precious" from falling into the wrong hands.

Powerful artifacts known as Precious have been appearing around the world. A group of various villians known as the Negative Syndicates wish to take the Precious for themselves and utilize them for evil means. To prevent this, the Search Guard Successor Foundation has developed its own special operations team, the Boukengers, to do battle and prevent the Precious from falling into the wrong hands.