Injured on duty and no longer fit for active service, soon-to-be-ex-Coast Guard Bran Kaulana is drifting, filling his days helping out at the Wai Ola Rescue Center, one of Honolulu's wildlife charities. He's working with the new veterinary, Steve, a man drawn to O'ahu by his fascination with dolphins. As their friendship slowly deepens into love, the two men are caught up in the mystery of injured seals and dolphins, a ruthless gang of smugglers and a not-so-dormant undersea lava vent.