該劇的世界觀就像條溫暖的歷史毯子,夾雜著我們似曾相識的浪漫、冒險和時空旅行的元素。前傳將探索母劇《古戰場傳奇》兩位主角Jamie (Ellen MacKenzie、Brian Fraser)和Claire(Julia Moriston、Henry Beauchamp)的父母,並以兩個不同時期的平行愛情故事為中心,Jamie的父母生活在18 世紀初的蘇格蘭高地,Claire的父母生活則在一戰時期的英格蘭。

Joshua Nolan and his adopted daughter, Irisa, intercept an advanced and expensive piece of arktech, however on their way to sell it they find the town of Defiance and must help defend it from a Volge attack. The feature length pilot to the SyFy original series.