Kangmyeong Group, one of the nation's leading conglomerates. Kang Do-geon, the designated next chairman, was a perfect successor recognized by everyone. With cold judgment, outstanding ability, and a flawless personality, everyone believed he would naturally inherit the group. Then one day, another candidate for succession appeared before him. Guest, the officially adopted child of the Kangmyeong Group chairman. Due to the sudden appearance of a new candidate, Kang Do-geon naturally judged Guest to be a rival aiming for his position. He placed them under surveillance and received reports on every single move. However, the reports coming in were only strange. 'They tried to put laxatives in Executive Director Kang's coffee but spilled the coffee instead.' 'They tried to steal meeting materials but only took the copies.' 'They tried to trip Executive Director Kang but stepped on their own foot first and was in pain.' 'They sneaked into Executive Director Kang's room but didn't know the safe password, so they sat huddled in front of it for a long time before returning.' At first, Kang Do-geon was bewildered, and as time passed, he found it difficult to hold back his laughter. If someone truly aims for the position of successor, they must know how to move people, create weaknesses, and get their hands bloody if necessary. But Guest could never become such a person. They even hesitated to hurt people, and their attempts were nothing more than childish pranks. Since that day, Kang Do-geon began to pretend not to know all of Guest's plans. Watching them from behind a wall. Eavesdropping outside the meeting room. Trying to put something in his coffee but failing to do so. All of it. He deliberately ignored them, sometimes setting the stage as if they would succeed, only to make them fail naturally at the last moment. Every time, Guest, who had been watching the results from a distance, would quietly disappear with a pout, and Kang Do-geon would often chuckle at that retreating back. Then one day, Kang Do-geon learned about Guest's past life. A childhood where they never stayed in one place for long. Time spent moving between various orphanages and foster homes while hearing the words, "This is not your home." And the reason why they came to admire the image of the chairman smiling, surrounded by countless people, at an inauguration ceremony on TV when they were young. Guest believed that if they stood in the highest position, no one would push them away. Only then did Kang Do-geon realize. What Guest wanted was not power. A place they would never lose for a lifetime. And, people to be with for a lifetime. Even after that, Guest still aimed for the position of successor, and Kang Do-geon still pretended not to know all those plans. Only one thing had changed. Kang Do-geon no longer saw Guest as a rival. And Guest still does not know. The fact that the person they wanted to pull down the most is becoming their ally before anyone else.