Shinobu Himeno is arrested and thrown into Asahi Female Prison for being an unwilling accomplice in a jewelry store robbery. She’s to serve her sentence in the infamous Cell Block 21, a dismal area full of tough, sex-starved women. Himeno is bullied and abused by inmates and guards. After being framed for starting a fight, she is taken away and tied up. Can the shy Himeno ever escape this living hell?

A woman working at a trading company is soon to be married to the boss. But one day a punk schoolgirl forces her way into their office and threatens to reveal her past gang life.

1986年，东京某公司OL田中悦子（田中こずえ 饰）与同在一部门的上司相恋，但上司却与悦子的好友携款逃跑。爱情失意的悦子孤独难耐，在寂静长夜只能聊以自慰。就在这时，时空突然发生错乱，待悦子醒来时，竟发现自己来到了15年后的日本。时东京已被第二次阪神大地震摧毁，所有高楼大厦全部消失不见。夜晚，正被飞车党追得走投无路的悦子得到私家侦探冈野的帮助，并暂时落脚在他的事务所里。她偶然发现有人正在进行时光机试验，最后发现时光机出现故障，无法运行。万般无奈之下，她再次来到冈野的事务所，以助手的身份权且栖身。在此期间，她与冈野发生了感情，之后更得知两人有着如此深的渊源……