Dale Richards, a battle-hardened officer from New Zealand's elite SAS, is just days away from retirement when a whisper from the past changes everything. At his grandfather's deathbed, he receives a cryptic note—coordinates leading to gold hidden in wartime Singapore. His final instruction: trust no one.

Half a world away, Kaori Watanabe, a stunning and sharp-witted Japanese woman, hears a similar confession from her own grandfather—a former WWII general. He too speaks of gold, and hands her a letter bearing the same coordinates.