While Hyun Jun and Seung Hee catch up, Sa Woo arrives at their location. Seung Hee gives herself up so Hyun Jun and Sun Hwa have time to get away. Seung Hee is detained and brought back to NSS.
In the process of being arrested, NK minister Yeon Gi Hoon is killed. Hyun Jun chases after the killer but he's able to escape.
The President has Baek San and Sa Woo arrested.
Chul Young returns to NK and interrogates a minister to learn the location of the bomb and the intended target(s). Once he finds out the target(s), he passes word to Hyun Jun.
The bomb is on a bus headed for Kwang Hwa Mun. Once it arrives there, the terrorists will detonate it.
The remote signals over Kwang Hwa Mun are scrambled to buy Hyun Jun time to find the bomb. When the terrorists are unable to detonate the bomb due to the scrambled signals, they decide to go in and detonate it themselves. Just as Hyun Jun and Sun Hwa find the bomb, the terrorists show up and attempt to stop them from taking it away.
I really liked the scene between Hyun Jun and Sun Hwa in which she confesses knowing that Seung Hee was alive. Even though she couldn't bring herself to say why she kept it to herself, you could tell he understood.