Falling for the Janitor Everyone Looked Down On

Park Chang-wook, hiding his identity as the founder of Taesung Bio, has been living as a hotel janitor — until a greedy daughter-in-law and in-laws look down on him and drive him out of his own home. By chance, he saves Oh Ji-a, daughter of Jeongseong Group's CEO, and forms a bond with the CEO Jeong Se-yeon, leading to a contract marriage. Now, before the arrogant businesspeople who mocked him as a "poor old man" and the family who betrayed him, Chang-wook slowly begins to reveal who he truly is.