一又二分之一夏天

故事发生在一夜之间。无名小卒宫田(中村靖日 饰)每天上班下班过着简单平凡的生活。刚刚被男友劈腿分手的真纪（雾岛丽香 饰）走出了他们同居的房子，失魂落魄的在饭馆遇上了在吃饭的私家侦探神田（山中聪 饰）和宫田。单纯善良的宫田把痛苦无家可归的真纪领回了家暂住。对真纪有了好感，想进一步发展下去。不料，分手半年的前女友阿美（板谷由夏 饰）却突然出现。侦探神田和阿美进行了一项秘密交易，牵扯上了黑社会老大浅井（山下规介 饰）一笔丢失的巨款，这笔巨款和几个人都牵扯上了关系。真相慢慢浮上水面，5个人的命运和嘴脸在一夜之间无处遁形。

老实的青年吴聚财（谢贤）不得已用假枪抢劫，抢着了同样贫穷的同学周日清（胡枫）。周日清诡计多端，两人同当经纪人，结成难兄难弟，生意渐渐好起来。他们共同追求家庭教师邓秀莹（南红），邓秀莹的未婚夫在南洋要来港治病。她为了借钱给未婚夫治病，险些被老板侮辱。后来邓秀莹的未婚夫因病去逝。未婚夫的妹妹徐琳（江雪）来香港发展。周日清与邓秀莹，吴聚财与徐琳感情日好，结为连理，共同打造“兄弟商店”。

故事发生在山西省汶水县云周西村，年幼的刘胡兰（池华琼 饰）当了儿童团长，协助大人们做力所能及的抗日工作，带领伙伴们站岗放哨查路条。抗战胜利后，阎匪来了，刘胡兰参加了妇女干部培训班，懂得了更多革命道理。1946年6月，她光荣加入共产党。被组织派回村组织妇女做军鞋、送公粮，支援前线。并与伙伴雪梅（李秀东 饰）乔装混入伪公所，将敌人骗出，交政府镇压。1947年某日，因叛徒出卖，刘胡兰和部分村干部被捕，阎匪张大胡子（李兰发 饰）威逼利诱，逼迫她说出暗藏党员和农会干部名单，不然就铡死她，刘胡兰大义凛然，厉声回答：怕死就不当共产党员！然后从容躺在已经杀害过六名村干部的铡刀下......

Byeong-tae (Yoon Mun-seob), a philosophy major at Y University, goes to a group blind date and meets Young-ja (Lee Young-ok), who studies French literature at H University. The young men and women of the 1970s, who have grown up under the influence of a rapid influx of Western culture, agonize over college issues, family conflicts, and their future paths in life. But such struggles are self-derisive, and they can see no tomorrow waiting for them. Between Byeong-tae and Young-ja, there is no promise of love, of any kind. They simply meet, and exchange meaningless conversation. Meanwhile, Yeong-cheol (Ha Jae-young), who always rides a bike and declares every time he drinks that he will set off in search of a whale, has feelings for another girl he met on the blind date, named Sun-ja (Kim Young-suk). But Sun-ja rejects Yeong-cheol, who stammers, has no prospects, and was even turned down for military duty due to health reasons, and he falls into despair. With nothing to look forward to, Byeong-tae and Yeong-cheol head to the sea. Yeong-cheol, who boasted that he would catch a beautiful whale in the East Sea, commits suicide, and Byeong-tae enlists with the military. Young-ja comes to see him off, even though she said she wouldn't see him any more, and the two of them kiss through the open window of the train that will carry Byeong-tae away.