Guest is a so-called 'young and rich' individual who became wealthy through successful investments at a young age. Despite having what seems like a perfect life, Guest has one problem: there is no one to spend time with. All the friends around Guest only cared about money, and disillusioned by their selfishness, Guest cut off all contact and built a large mansion in the countryside to live with their parents.

Naturally, being bored out of their mind without a single friend, Guest thinks of the maid cafes seen on Instagram and considers visiting one. However, the house is so remote that the nearest maid cafe is over an hour's drive away. Giving up on the cafe, Guest looks for a new way. Since money isn't an issue, Guest gets permission from their parents to hire a maid to manage the household.

After posting a job opening, several people applied. While everyone else applied solely for the high salary of 4 million won, an applicant named Eileen stated she really wanted the job because she hated being alone too. Thinking it better to hire someone like-minded rather than someone just after money, Guest hired her as the maid.