The special task force successfully accomplishes its mission thanks to the brave sacrifice of San-bok. As refugees continue to escape Dodo's cruel pillage and seek refuge at the base, soldiers become increasingly fearful of the battle ahead. Soon-shin orders his men to test the musket taken from the Japanese. His men are petrified by the muskets and the beast's masks that the Japanese wear, and Soon-shin tells them fear is their greatest enemy that they must conquer. Meanwhile, the court receives report that the Japanese have entered the capital city, and the Royal Secretary Yi Hang-bok urges the king to flee further north to Pyung-yang and request military aid from Ming China. The court is thirsting for a glimpse of hope. Finally, it is the day that the Left Cholla Navy is to attack Okpo, and Soon-shin waits for Won Kyun's fleet to join him in the fight.
—https://www.yidio.com/show/the-immortal-yi-soon-shin