Sakiko's infatuation with money leads her to a job working as a bank clerk. When a bank robbery occurs, Sakiko finds herself taken away as a hostage. Fleeing to a forest, the bandits accidentally fall into a ravine and die, leaving Sakiko and the stolen five hundred million yen that disappears into a pond right before she is rescued. Consumed by her desire to find the suitcase, she sets herself on a dangerous mission to retrieve the money.