一直隐藏自己异人身份的张楚岚（胡先煦 饰），自从遇到身世神秘的冯宝宝（李宛妲 饰）后，便被卷入不同异人门派争斗的漩涡中。随着张楚岚是神秘功法“炁体源流”传人的秘密被公之于众，异人界围绕他展开了激烈的争夺，哪都通、全性派、天下会、天一门等各方势力一一登场，混战一触即发，而此时张楚岚却意外揭开了当年的秘密…… 影片改编自国漫《一人之下》。

一直隐藏自己异人身份的张楚岚（胡先煦 饰），自从遇到身世神秘的冯宝宝（李宛妲 饰）后，便被卷入不同异人门派争斗的漩涡中。随着张楚岚是神秘功法“炁体源流”传人的秘密被公之于众，异人界围绕他展开了激烈的争夺，哪都通、全性派、天下会、天一门等各方势力一一登场，混战一触即发，而此时张楚岚却意外揭开了当年的秘密…… 影片改编自国漫《一人之下》。

一直隱藏自己異人身分的張楚蘭，自從遇見了來歷神秘的馮寶寶後，便陷入了不同異人教派爭鬥的漩渦。隨著張楚嵐身為神秘功法「氣身源流」繼承人的秘密被公開，異人界在他周圍展開了一場惡戰，那都通、全邪宗、天一宗等勢力紛紛出現。一場，戰鬥即將爆發，此時，張楚嵐意外揭開了當年的秘密…

Zhang Chulan, who has been hiding his identity as an Inhuman, is caught up in the vortex of fighting between different Inhuman sects since he meets Feng Baobao, who has a mysterious background. As the secret that Zhang Chulan is the heir to the mysterious technique "Air Body Source Stream" is made public, the Inhuman world has started a fierce battle around him, with forces such as Nadutong, Quanxie Sect, Tianyi Sect, and so on appearing one by one and the battle is about to break out, but at this time, Zhang Chulan accidentally unveils the secret of the year....