The protagonist has devoted his life to the grueling road of civil service exam preparation. One evening, while wandering the familiar streets of Noryangjin, he steps into a small cup-rice shop to grab a quick meal.

There, the shop owner makes a startling promise:
“If your goal is to enter national public service, I can grant that wish instantly.”

Tempted by the audacious offer, he agrees to the terms… only to find himself suddenly transported back to the Joseon Dynasty…