Sebastian, an up-and-coming Mexican actor, seems to have it all until he is thrown back into the tortuous world of dating, only to realize he has zero dating "game". Forced into the arms of his crew of leftover best bros, he discovers he's not the only ill-fated millennial struggling to find love.。抗战胜利后,由山东老区组建的四连护送工作队开赴南满塔河地区,建立新的民主政权。刚刚提升的指导员林玉生(朱亚文 饰)带队行进中突遭敌人伏击,我方损失惨重,女队员秋英(甘婷婷 饰)在战斗中失踪,久寻无果判定已牺牲。真实情况是秋英脱险后也在寻找林玉生,结果是每每都失之交臂。后来相逢后,俩人沿袭了先前那和争强好胜的别扭关系。辽沈战役前夕,由于主力战略转移,四连军心不稳,陆续发生了军纪问题,感情问题,以及上下级矛盾等诸多问题,但林玉生逢山开路、遇水搭桥,逐步化解了困忧部队的种种困难,他要向秋英证明,自已现在已是个合格的指导员……。