This film tells the story of Hu Guohua, who falls victim to a plot, framed in a rigged gambling scheme that leads to the loss of his family fortune. Despite his wayward behavior, he reaches a low point by desecrating his family's ancestral grave. In a desperate attempt to deceive for money, he even stages the absurd event of marrying a paper bride. At the brink of hopelessness in life, he unexpectedly encounters Sun Guofu, a master in tomb-robbing, who guides him to self-realization. Although fate plays its tricks and eternal love is elusive, Hu Guohua undergoes a profound transformation from a reckless scion to a wandering adventurer in the world of tomb-robbing.

《乐游原》讲述了朝堂动荡皇权旁落，镇守边关的皇孙李嶷（许凯 饰）被迫承担起平叛重任，与隐藏真实身份的将军独女崔琳（景甜 饰）各领一军卷入纷争。二人在多方势力中明争暗斗兵行险招，在数次交锋中棋逢对手相杀相爱，上演了一场江山为聘，双强共赴乐游的浪漫爱情故事。