One day, I became a person of the Joseon Dynasty.

In 2020, Ji-eun, just 20 years old, drowns in a car accident. However, for some reason, she survives, and when she opens her eyes, three handsome, naked men gaze at her with suspicious eyes. It turns out that Ji-eun's soul has taken possession of a Joseon Dynasty woman. With no other choice, Ji-eun decides to stay. As time passes, the three men develop feelings for her...