In 2021, Yain is back! Ahn Jae-mo, the leading man of Rustic Period, the beloved TV series in 2002, comes back as Kim Doo-han, no, King Doo-han. With Lee Jin-ho, the self-claimed biggest fan of the King, he navigates the new territory – Youtube. But the world is so different from his time, and adapting to the new era may be the most significant issue he faces before conquering the digital world.