A female writer, because of the creative bottleneck, can not write good works, want to commit suicide. But if she kills herself, her husband is having an affair with her protégé, and it just happens to fulfill them. So she disguises herself as a murderer and tries to frame her husband for the crime. On the other hand, her husband and her disciple were also planning to kill her. Coincidentally, the husband set a trap to kill his disciple by mistake, and the disciple set a trap to kill his husband by mistake. Seeing the two people who died before her and her surroundings, the writer understood everything. She's happy, doesn't want to die, and decides to write a play about her husband and apprentice's ridiculous affair. Just as she was eating a chocolate bar and writing the script, she herself died. Because two of the boxes of chocolates on the table were poisoned ones that she herself had prepared for her suicide, and when her husband had poisoned her earlier, he had accidentally touched off the box of chocolates and messed up the order, so the writer accidentally ingested the poisoned chocolates. In the end, the three people in the case were poisoned each other.