Taking place in the fictitious city of Mariner Bay, California, which was built on an ancient demon burial ground, Lightspeed Rescue is a government organization headed by Captain William Mitchell. He recruits four civilians and his own daughter to defend the city as the demon spirits threaten to rise again. Each of the four civilians chosen had a special area of expertise, together making the Power Rangers, aided by a team of scientists and engineers and operated out of the Lightspeed Aquabase- an underwater military compound that also deters the hydrophobic demons from directly attacking the base. In addition, Lightspeed Rescue featured a reunion reappearance of characters from Power Rangers Lost Galaxy, when the villainess Trakeena comes to Earth to destroy it and the Lightspeed Rangers team up with the Galaxy Rangers.