My Secret Cache  (2006)

Theatrical Release Information:
My Secret Cache

An obsessed young woman sets out to find a suitcase stuffed with 500 million yen in director Shinobu Yaguchi's satirical tale of one girl's singular quest for monetary satisfaction. Kidnapped by bank robbers who had just pulled in a tidy sum from their latest heist, material girl Sakiko (Naomi Nishida) is the sole survivor of a violent car wreck that instantly kills all of the bandits and sends the suitcase containing the money flying into a nearby grotto. Despite the commonly held belief that the cash went up in flames with the getaway car, Sakiko knows better and quickly becomes single-minded in her determination to seek out the missing take. ~ Jason Buchanan, All Movie Guide