Thomas Magnum, a decorated former Navy SEAL, returns home from Afghanistan and applies his military skills to become a private investigator in Hawaii taking jobs no one else will—with the help of fellow vets T.C. Calvin and Rick Wright, and former MI:6 agent, Juliet Higgins.

With the region's last source of freshwater buried under a Native American reservation and evil forces angling for control, a convict fighting for her freedom becomes the unlikely protector of a young boy who may have the power to save it