In 1990, crimes often happened in Shuangyuhe, a small city in the Northeast. And all these cases had something to do with Shang Quanliang (Fan Wei), who worked in the security department of the thermos factory. Everyone wanted the gold. When the legend about gold in Laoyao Mountain became known, forces of evil came here to look for the gold one after another and the conflicts escalated. What could people do when motivated by greed? The situation was so mysterious...

故事发生在1990年，东北一座人口两万人的小城市——双鱼河，双鱼河恶性事件频发，而这些案件的线索竟皆与暖瓶厂保卫科职工商全亮（范伟 饰）有着千丝万缕的关联，黄金动人心，在老妖山黄金传说浮出水面之际，众黑恶势力先后“入局”寻金，矛盾冲突不断升级，当贪念逐渐占据“上风”，人性深林又会展现怎样的众生相？重重疑团，云山雾罩……

《立功東北舊事》是由華視娛樂投資集團股份有限公司等公司出品，查慕春執導、編劇，範偉、餘男領銜主演，潘斌龍、種丹妮、袁晶、韓彥博、劉冠成、羅輯主演的12集東北懸疑喜劇。

該劇講述了1990年，相傳有黃金的東北小城市雙魚河，引來各方人物前來淘金，導致惡性事件頻發，立功心切的暖瓶廠保衛科職工商全亮深陷其中，並遭遇各種連續離奇案件的故事。