Korea-Khitan War S01 E12 Episode 12

"Peace achieved through victory."

Kang Gam Chan makes a critical decision to stay back in Gaegyeong, sacrificing himself to create a window for Wang Sun's escape. Despite Kang Gam Chan's noble sacrifice, Wang Sun encounters unforeseen dangers at every step of his journey. Meanwhile, Yang Kyu is devising a plan to reclaim Gwakju, the current base of the Khitan army.