余生を刑務所で過ごしたい――ムショ活中の一橋桐子（松坂慶子）が、次に狙うのは“泥棒”。闇金業を陰で営む寺田（宇崎竜童）の事務所に清掃員として潜入し、そこで大金を盗んですぐに捕まれば、刑務所へ行けるのではと考えたのだ。金庫や大金が隠してありそうな場所を隙を見つけては必死に探すが、なかなか見つからず。更には逆に事務所荒らしの泥棒男を捕まえ、寺田に感謝される始末…果たして桐子は大金を盗み出せるのか！？
Kiriko, in her "prison challenge," sets her sights on robbery. She infiltrates the office of black-market money lender Terada Kazuo by offering to work there as a cleaner, thinking that stealing the big amount of cash stashed there and getting arrested would send her to prison. She searches the safe and other likely hiding places for the money, but during her unsuccessful attempts she ends up inadvertently capturing another thief who had come to raid the office, and getting thanked by Kazuo. Will she ultimately consummate her planned theft?
