Soon-shin meets the King in disguise at Sung-ryong's house. Sonjo asks Soon-shin how he feels about the changes the new king is making, and Soon-shin replies that the world will not truly change as long as innocent people are being starved and persecuted. The king presses on with his reform. He cuts the royal staff in half and fires the imperial attendant Ju Tae-moon placing the rice picking eunuch Yoon Hwan-shi in his place. Year 1572. Soon-shin is living a peaceful life with his family in Ahsan.With the military service exam impending, he visits his master's grave in Gonyang. Meanwhile at the northern front, Won Kyun has come to be known as a merciless army commander more ruthless than the Jurchen nomads. A nomad raid leaves a village in ruins, and Won Kyun goes after them with his men. After an intense battle, Won Kyun saves Woo Ji-chuk and crushes the nomads.
—https://www.yidio.com/show/the-immortal-yi-soon-shin