朱兰早与富家子徐坚白（张扬）相恋。朱兰自幼父母双亡，由叔婶养大，但叔婶却因贪财而将她许配予同村的军人李志忠（朱牧）。坚白在外地求学，假期回乡与兰每晚相聚，被人发现，李志忠的父母闻讯，要求退婚，叔父（吴家骧）怒掴兰，被志忠阻拦，兰感动不已。秋明心仪坚白，主动相邀。晚饭后坚白突感不适，秋明将他接回家中静养，亲侍汤药，坚白对秋明好感油然而生。兰知悉秋明与坚白同校同宿，自惭形秽。亮写信给他，佯称已自对象，提出分手。坚白接信，伤感不已，转移接受秋明爱意。坚白因祖母（欧阳莎菲）病逝，回乡奔丧。弟弟坚中（田青）告以实情，坚白对兰爱念复炽，相约私奔。秋明到访。得悉二人的私奔计划，赶往劝阻兰。却发现兰原来肺病缠身，但兰不忍连累坚白，终于打消私奔之念。兰与明一夕长谈，竟成知己。坚白意冷心灰，黯然北上投考大学。途中结识爽朗热情的少女苏亚南（叶枫），在她鼓励下参加了救国运动，并对南情愫暗生。坚白离开后，秋明接了兰回家同住，并建议她投考护士学校。秋明同学江雨（苏凤）因与坚白同校，故经常来信告知秋明后者近况，秋明与兰同感安慰。抗日战争爆发，坚白、南与一众师生逃难。途中遇上空袭，谷老师（王莱）不幸丧生，众人伤心之余，矢志抗日救国。

2020年“短视频+直播”的电商新态势异常火爆。浙江义乌，这里没有顶流的网红明星，却因“9.9元，包邮到家”的报价模式一时间吸引了无数草根底层，也被誉为“草根逆袭的天堂”。 “不仅带您走进品的源头，更要通过品带您走进中国小人物精神世界的源头”——源头哥。源头哥是一位在义乌拍摄短视频带货的“草根导演”。与义乌当地主流的“9.9元，包邮到家”短视频风格不同，他怀揣着成为“中国抖音届周星驰”的梦想, 立志要通过短视频展现中国小人物的精神世界。然而，随着时间推移，理想的蓝图在资本的大肆入侵下几近渺茫。彷徨之下，他重启了一条寻觅之路。在精神追求与爆单变现的徘徊之中，他究竟该何去何从？

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.

陈静宜（周海媚 饰）是一名高级督察，母亲在20年前被变态凶徒残忍奸杀了，成为警察的她务求能找到凶手。此时，相同手法的杀人案件出现了，静仪内心再起波澜以外，极力追寻真凶。众多追求者的静仪，与同是警察的有妇之夫发展了一段暧昧关系。但她并没有忘了要将凶徒绳之于法。但在她不断追捕的过程中，渐渐落入了凶手的圈套了……