Zhu Zimo, an "honest man" who has been working as a sidekick in Hengdian for three years, appears to be honest and honest, but in reality he is possessed by a drama queen and is good at using his innocent appearance to deceive others. His biggest dream is to play the leading role once, but due to a mistake in an audition, he accidentally gets involved in the internal fight of the Ye family, the top wealthy family in Beijing.
On the day of the audition, Zhu Zimo was framed by a domestic servant bribed by a competitor and accidentally entered the private lounge of Ye Qingchuan, the eldest daughter of the Ye family. Ye Qingchuan is the famous "Iron-Blooded Rose" in Beijing. She looks cold and noble, but in fact she longs for true love in her heart. She mistakenly thought that Zhu Zimo was the new bodyguard arranged by the family, and threw him a black card: "From today on, you are responsible for my safety."
Zhu Zimo wanted to explain, but when he saw the unlimited black card, he shut up decisively. He decided to play the role of "bodyguard" first and find out who was behind the scenes. However, he soon discovered that Ye Qingchuan was surrounded by dangers, not only the clansmen who coveted the family property, but also the mole who had been lurking for many years. What made him collapse even more was that Ye Qingchuan seemed to have a different kind of feeling for him, but he, an "honest man", was really attracted to her without knowing it.
When the truth gradually emerged, Zhu Zimo discovered that the audition was just the beginning of a larger conspiracy...
