Lin Wanrong because of an accident, to the Ming Dynasty Xuande Jinling, met and dead sister Xiao family miss as like as two peas. Find the sustenance of the forest Wanrong alias Lin three, Xiao Fu into become the master, and all sorts of friction and miss Xiao Yuruo. Xiao Jia crisis in a series of accidents, but Lin, three using modern wisdom to solve, not only to resolve the crisis, but has been in front of Xiao Yuruo, two people also alternate live in love. In this process, the three forest found Xiao family crisis was not an accident, but the forces of the parties in order to win the custody of the first emperor Xiao home by testament. 38 Lin face markets to turn the tide, and was called "the first one".

林晚荣因为一次意外，来到明朝宣德年间的金陵，见到了和去世的妹妹长得一模一样的萧家二小姐。找到寄托的林晚荣化名林三，进入萧府成为家丁，并和大小姐萧玉若发生种种摩擦。萧家在一系列意外下，陷入危机，但林三利用现代智慧一一解决，不仅化解重重危机，更得到了萧玉若的赏识，两人也在相处中互生爱意。 　　在这过程中，林三发现萧家的危机并非意外，而是各方势力为了夺取萧家保管的先帝遗诏所致。林三八面逢源力挽狂澜吗，并被封为“天下第一丁”。