Investigator Masha Lyubimova is used to many things, but the scene of this crime made her horrified. Only a madman could do this to a girl! Trying to decipher the signs left by the killer, Masha learned the legend about the terrible custom of the ancient Chinese - if a poor man could not take revenge on his offender, he committed suicide on the threshold of his house and turned into the spirit of vengeance... Journalist Gleb Korsak was used to receiving strange letters and parcels. But a paper package without a signature attracted his special attention, and the contents simply shocked him. He would have considered everything a stupid joke if he had not soon discovered a new “gift” in his mailbox... Realizing that an unknown criminal had made him a partner in his terrible game, Gleb turned to the police and found out: someone had brutally killed two girls and, apparently, that was it. won't stop...