Late-night radio host He Xiaoran has spent years suppressing her past heartbreak after secretly loving her close friend, Xiao Shangqi, who pursued a relationship with their mutual friend, Chen Fei'er. To preserve their friendship, she kept her feelings hidden. However, eight years later, Xiao Shangqi returns after years abroad, bringing back memories she thought she had left behind.
During the Republican era, a group of frustrated people from the movie industry is invited in a luxurious mansion to make a movie out of a gruesome case that has recently rattled the city of Shanghai, in the hopes that it would turn into a huge sensation and make them famous. However, they never expected that the murderer would be in their midst and that the truth behind the case would be far more bizarre than their fictional movie plot.