The biggest tech revolution of the 21st Century isn't digital, it's biological. A breakthrough called CRISPR has given us unprecedented control over the basic building blocks of life. It opens the door to curing diseases, reshaping the biosphere, and designing our own children. Human Nature is a provocative exploration of CRISPR's far-reaching implications, through the eyes of the scientists who discovered it, the families it's affecting, and the bioengineers who are testing its limits. How will this new power change our relationship with nature? What will it mean for human evolution? To begin to answer these questions we must look back billions of years and peer into an uncertain future.

遥远的未来，飞行交通工具已经取代了汽车，但是赛车这项运动仍然在各个星球广受欢迎。著名的“红线”赛事是赛车界级别最高的比赛，也是众多车手的终极梦想。在竞争红线赛的资格赛——“黄线”比赛中，赛车手JP（木村拓哉 配音）幸运的与“少男猎手”索诺西（苍井优 配音）一同晋级红线。本届红线赛在枪弹横飞的“机器世界”举办，令本就暴虐刺激的赛车更具吸引力。然而主办星球的统治者因担心自己星球的秘密暴露，决定在比赛中全力阻击一众车手；另一方面，JP在幼年时曾与索诺西相识，然而后者似乎忘记了这一切。红线赛如期在枪林弹雨中拉开了帷幕……

该片讲述已经分手的恋人“善花”和“度英”作为电影外景管理人和导演在釜山再次相遇后的故事。

退休警察豹叔膝下有儿子阿国（张国强 饰）和养子阿定（刘德华 饰），阿国曾是国际刑警，如今返港担任督察；而阿定则混迹黑道，虽然收入丰厚并颇得老板杨东海赏识，但阿定拒绝贩毒令杨东海很为难。阿定与阿国情同手足，但并未打探彼此工作。不久，阿国受命调查杨东海一伙，同时阿定中了杨东海苦肉计，不得不与毒贩接洽，结果引发血战。背负杀人嫌疑的阿定被阿国追索，侥幸逃脱后连累后者遭警队处罚。另一方面，阿定和阿国在警队中的对头步步紧逼他们，最终身死，而阿定的女友雯雯（萧红梅 饰）为阿定几次犯险，阿定不忍弃她而去独自出国避祸，形势越来越向失控的地步发展……