寄宿公寓：女主人的目的

　　疏离多年的手足被迫重逢，直面未解的心结，重新审视与情感疏离的父母之间紧张的关系。

　　来自21世纪的项少龙（古天乐 饰）曾意外穿越，并助秦王（林峯 饰）一统天下，这段跨越时空的宿命纠缠将两人紧紧捆绑，两人也成为亦师亦友的情感羁绊。然而，在项少龙归隐田园多年后，未知穿越者却骤然降临，大国基业陷入倾覆危机，秦王不得不求助于早已不问世事的项少龙。面对足以颠覆历史的强敌，他们能否放下芥蒂联手抗敌？那段掺杂着师徒之恩、君臣之畏与知遇之情的情感，又将成为保护彼此的铠甲，还是刺向对方的利刃？                        

　　A man, who years earlier mysteriously abandoned his family and isolated himself in a small northern town, returns for one last chance to reconnect with his troubled daughter. When she goes missing, he risks everything to find her, including exposing the fact that he is becoming invisible.