In the ancient town of "Wangchuan Ferry", it is said that every blood moon, there will be ghosts crossing the river.
Lu Li, a cultural relic restorer, accidentally stepped into this forgotten ancient town while tracing clues to an ancient painting. Every household in the town is decorated with lights and colorful decorations, but the atmosphere is strange, as if they are preparing for a grand and mysterious wedding. What's even more bizarre is that the townspeople actually regard him as the "chosen man" who is about to marry the "river god's bride", and treat him with respect and fear.
Lu Li thought it was a misunderstanding, but found that he was forced to put on wedding clothes and tied with a red rope to become the "groom" of the "Blood Moon Festival". He is not marrying a bride, but is being sacrificed to the "River God" to quell the plagues and disasters that have plagued the ancient town for hundreds of years!
Without a golden finger, Lu Li relied on his professional knowledge of ancient paintings and folk customs, as well as the meticulous observation power unique to a cultural relic restorer, to discover in a desperate situation that behind the so-called "River God Bride" and the "Blood Moon Festival", there was a huge conspiracy about the ancient town's water veins, rare minerals and power struggles. He must reveal the truth and escape from this death wedding before the blood moon comes, otherwise, he will become the "sacrificial groom" who sinks to the bottom of the river under the Forgotten River Ferry!