1941年,南侨机工林耀(yào )祖在滇(diān )缅公路遇到日军轰炸,意(yì )外穿越至2025年的现代都(dōu )市,他因(yīn )与现代人不同的言行与(yǔ )家国执(zhí )念引发误会,被女主宋(sòng )瑶收留,林耀祖口述的南(nán )侨机工(gōng )抗战往事,让众人重新(xīn )认(rèn )识陈嘉庚与华侨救国(guó )壮举。得(dé )知抗战胜利,山河无恙(yàng ),他(tā )百感交集,在宋瑶的陪(péi )伴下,他(tā )感受现代生活,共赴嘉庚(gēng )纪念馆。在馆中,他见到(dào )当年的(de )绝笔信。与宋瑶,张依依她(tā )们分别后,来到了马来(lái )西亚槟(bīn )城,看到了华侨抗战殉职(zhí )机工纪(jì )念碑,追忆牺牲战友,重(chóng )温华侨赤子之心,这段跨(kuà )越时空(kōng )的旅程,让林耀祖完成(chéng )了(le )历史使命,也让当代青(qīng )年铭记(jì )华侨以生命铸就抗战生(shēng )命线