On discovering that Eagle Tower, the site of their first expedition, is scheduled to be demolished, the Outriders plan a new expedition there, but, once they arrive, they get a few surprises.
Cam Walker and his friends from the Outriders plan to combat boredom by traveling twelve miles to Blue Cave, where they hope to see the glow of phosphorous plankton and instead encounter unexpected danger.
Cam Walker and his friends find adventure and danger when they accompany their biology teacher on a field trip to Willow Key to help conduct a biomass study and search for a long-lost treasure.
