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？
警官哈金卧底潜入红虎帮，并成功赢得该帮派的信任。他不仅成功揭露了他们的罪行，还必须直面这些残暴的罪犯。然而，他遭遇背叛，陷入道德困境，在不为人知的情况下为维护正义而战，他的忠诚度也受到了考验。
7th century Arabia. A time of feuding tribes vying for power and supremacy. Courageous Princess Hind (Aiysha Hart) refuses to serve as concubine to the merciless Sassanid Emperor Kisra (Sir Ben Kingsley). Escaping with her father King Numan into the vast and unforgiving desert, Hind is pursued by Kisra’s mercenary and his bloodthirsty troops. Father and daughter are forced to trust a mysterious bandit (Anthony Mackie). Against all odds, Hind unites the fractious tribes against the powerful invading military of the Sassanid Empire. In an epic showdown, the Battle of Ze Qar will forever change the Arabian Peninsula and echo throughout history.
