The story tells the story of a female college student with a coquettish personality and a rebellious and sinister playboy who met at a party for the first time. Due to various reasons, they both left a bad impression on each other. The male protagonist tried to date the female protagonist, but was rejected by the female protagonist with a venomous tongue. The male protagonist who has been among thousands of flowers has never failed. This time he suffered a misfortune. He vowed to teach the female protagonist a lesson in the future. By some strange combination of circumstances, the female protagonist came to the male protagonist's company for an internship. The male protagonist began a fun life of training the female protagonist. Later, the male protagonist suddenly discovered that the female protagonist turned out to be the girl he had a crush on when he was a child, and everything began to change.