陈俊飞和团队以帮助客户解决婚姻情感中的问题而混的风生水起。为了完成一个叫单卓的美女客户委托，陈俊飞亲自下场假冒算命大师伪装明星助理套路满满，对单卓死缠烂打。不料接二连三的麻烦接踵而来，号称移情高手的陈俊飞发现这一次的委托绝对没那么简单。

Once Upon a Time in the Northeast tells a story of a few young Northeast youth with totally different personalities, who fell into trap of a few Hong Kong villains. They outwitted Hong Kong villains using different plans. This comedy story is extremely funny and reflected how popular Northeast China Culture is.