Wakako is a housewife living a quiet life with her husband Takashi and their two children. When Takashi collapses from a subarachnoid hemorrhage, she learns he has lost his job and fallen into gambling debt. With no financial support, Wakako accepts a suspicious job offer and travels to Singapore with her children. There, she is recruited into a gold smuggling operation. Though frightened, Wakako goes through with the job alongside two other women driven by hardship: Kiyoe, a postdoctoral researcher obsessed with K-pop, and Mayu, a pregnant single mother working at a hostess club. Exploiting lax security checks on women with children or injuries, the trio successfully carries out the smuggling. Not long after their first job, the trio returns to Singapore to smuggle gold on their own for more money.