1919年，日本随着第一次世界大战结束，日本被战火蹂躏的欧洲尚未恢复元气，旨在解决战争遗留问题和奠定和平基础的巴黎和会准备召开，中国作为战胜国之一，派出了时任驻美公使、全权代表顾维钧（陈道明 饰）等五人组成的代表团参加和会。然而在欧美各国以及日本等列强意欲重新划分势力范围的大环境下，中国代表团人数遭到削减、德国在山东的利益眼看也要落入日本之手。顾维钧在会议上慷慨陈词，驳斥日方无理要求，然而公理在利益面前显得多么脆弱。顾维钧好友肖克俭（何政军 饰）之妻梅（许晴 饰）专程赶赴巴黎，寻找投身爱国工人运动的克俭。克俭在法国的活动、以及国内浩大的群众呼声令和会中的顾维钧等感受到责任重大。
应昌佑
回复 :馨蔚是被外星人植入了舒瑶的记忆并指派到地球执行命令的机器人，目的是为了寻找人类的弱点，好为将来的大肆侵略做准备。秦彦认为馨蔚就是舒瑶，想尽办法接近她试图唤醒她的情感。馨蔚被两人爱情的回忆打动，放弃了入侵地球的计划，而伙伴刘思齐却向秦彦和他们的孩子下了毒手，解药只有一瓶，该救谁，馨蔚陷入绝境之中…
孔令奇
回复 :Wanda's world has been turned upside down when her teenage daughter Nina suddenly turns up in a hijab. Secretly, Nina has converted to Islam; she exclusively eats halal, strictly observes the prayer times and wishes to be called Fatima. Mother of a liberal Viennese patchwork family, Wanda is appalled; she has always strongly stood against religious fanaticism. However, all attempts to make Nina see reason fail. To make matters worse, Wanda's ex-husband has just fathered a child with his latest wife, and Wanda begins to yearn for a time when her only problems were her daughter's truancy and pot smoking. When she meets Hanife, the mother of Nina's Muslim girlfriend, she finds an ally. Hanife, who immigrated to Austria as a child, is determined to save her daughter from the extremely old-fashioned image of women, which Nina is enthusiastically preaching.
瑞秋
回复 :来自KT星球的洛展，为了找寻遗失在地球的能量石救出被困的父亲，在地球上生活了三百年，为了方便寻找能量石，洛展一直以军人为职业。随着时间的流逝，洛展的特异功能渐渐消退，1980年和战友杜斌执行任务中，为了保护洛展，队友杜斌牺牲！而在遭到伏击落入山崖后，被一女孩相救……为了照顾战友杜斌瘫痪在床的父亲，洛展筑起了与外界的洪墙…10年后，救他的女孩离世，女孩的丈夫颓废成赌徒酒鬼，扔下年仅10岁的小天自食其力。洛展在与小天的打工交易中，慢慢与小天产生深厚友谊，因父亲欠债，小天被同样来自异星的秦蜀抓走，洛展再次打开心中的“洪墙”，展开孤身救援…
