影片取材于广为流传的“北新桥锁龙井”传说，揭开千年古井下隐藏的诡异传说真相。传说明年间，高僧姚广孝携鲁班四杰将祸世妖龙封印于锁龙井。百年后，锁龙井下异象丛生时现龙吟，妖龙破印复仇之说渐起，井底浮现巨大地宫，贪心者迷恋龙宫宝藏贼前赴后继下井摸金，多死于非命。鲁班四杰后人再次集结，探秘锁龙井下真相，经历杀机重重的幻象迷阵、诡戾傀儡，险象环生后，幕后操纵之人终于现身……

Many urban legends exist around a famous "Suolongjing" near Beixin Bridge in old Beijing. The ancient water well with chains going underground. According to legend, in the early Ming Dynasty, the old dragon was entrenched in this place. After the capital was moved in 1421 from Nanjing to Beijing, dragon was accidentally disturbed by the great momentum. This old dragon has a violent temper and mmediately flooded the city of Beijing, so Zhu Di asked retired magician Yao Guangxiao and his Luban four heroes to go out and lock the beast in the dry well near a small bridge. A hundred years later descendants of the four masters of Luban gathered again to explore the truth of Suolong Well

En 1421, un dragon en colère inonde la ville de Pékin. Le magicien Yao Guangxiao et les quatre héros de Luban enferment la bête dans le puits asséché de Suolong. Cent ans plus tard, les descendants des quatre maîtres de Luban se trouvent réunis pour explorer les secrets du puits...

명나라 시기 천하를 호령한 천하사걸의 계승자들이 100년 후 다시 모여 악을 처단하는 내용을 담은 시대액션물

Na antiga Pequim, circula uma lenda sobre o "Suolongjing" próximo à ponte Beixin: um poço subterrâneo com um dragão que causou inundação após ser despertado acidentalmente na Dinastia Ming. Zhu Di, então, pediu a heróis para aprisionar o dragão no poço. Um século depois, seus descendentes investigam a verdade do Poço Suolong.