A useless college graduate from the 21st century transmigrates into the body of an utterly useless concubine-born daughter of the Minister's residence. To avoid being forced into a substitute marriage, she bangs her head against a wall, only for her legitimate older sister to drag her off and marry her to a tyrannical prince who is supposedly on his deathbed.
Is the prince's impending death a lie, while his tyranny is real?
The girl, utterly despairing, cries, "Help, help! Other people transmigrate and thrive because they're clever, brave, and capable. I'm useless, I won't survive five episodes. No, three episodes! One! Ah! Why am I so unlucky?"
The man says, "Don't worry. You still have me..."
The girl says, "Everyone knows you're a tyrant. Aren't you the biggest danger of all?"
Theme: Sharing life and death