Power Rangers Lightspeed Rescue

Mariner Bay, California, is a nice town – too bad it was built on an ancient demon graveyard. When the demons threaten to rise, a government organization called Lightspeed, headed by Captain William Mitchell, recruits four civilians and Mitchell’s own daughter to defend the city. A team of scientists and engineers led by Angela Fairweather assists the Rangers, who are headquartered at the Lightspeed Aquabase, an underwater military compound. The demons fear water, keeping the base secure from attack... (powerrangers.com)