Part 4/9:
Meanwhile, within the ranks of Kim’s team lies a traitor, Won-seok, who secretly serves the parasites. Tasked with eliminating Kang-woo, he wields a knife resembling parasitic tentacles while continuing to deceive his colleagues. Tensions rise when Kim and Su-in agree to meet, unaware that Choi has dispatched someone to follow Kim. During their meeting, a commotion arises, leading to chaos with the arrival of soldiers.