Sanako Moriwaka (Mikako Tabe) is single and works in the accounting department of a soap company. For her job, she checks receipts and bills. Each slip that she reviews, mentions only the dollar amount and a brief reason for the expense. When Sanako Moriwaka reviews the slips, she can often discern suspicious facts surrounding the expense or even troubles in the lives of the employee.
Since his mother died, Minowa (Matsu) left his hometown because of his father's irresponsible ways. 10 years later, he hears that his father has died. He goes back to his hometown as 30-year-old man who doesn't have a regular job.
When they find out their community is plagued by debt, three high schoolers in an old country town set out in search of some ancient buried treasure.
