My Secret Cache (1997)
Sakiko, a young bank teller, has an unhealthy obsession with money. Thieves hold up the bank, kidnapping Sakiko in the process, but eventually crash their car, resulting in a suitcase stuffed with cash falling into a nearby river. For the remainder of the film, Sakiko begins a desperate quest to retrieve the money.
Directed by Shinobu Yaguchi
Written by Shinobu Yaguchi, Takuji Suzuki