Three years in a war zone taught Lena Kingsley more than any number of years in medical school ever could. The only bright spot was that she'd been placed in the same unit as her life-long best friend Jack Chapman. Thanks to Chapman she'd settled in with a group all serving under Colonel Preston Packard. Now that the US Troops are being pulled out of Vietnam, all Lena can think about it getting home and locating her twin brother who she hadn't heard from in months. But things never go the way you plan them and before she knows it, she's off on one last operation. However, what was supposedly a quick geological survey of a previously undiscovered island is about to go south.