Continuity mistake: Whilst Seok-woo is on the phone with the client, in the shot where he says "This could be based on a false report", he is shown with three fingers wrapped around the phone. In a close-up shot, he suddenly has four fingers wrapped around the phone. This continues for the next two shots where his little finger is shown curled against the side of the phone, then wrapped around the phone again. (00:03:40)
Continuity mistake: When the worker at the checkpoint is explaining to the truck driver that there was a tiny leak at the biotech district, he is shown wearing a mask that is pulled down underneath his chin. When the camera changes to a different angle, the worker's mask is now pulled over his chin to be positioned just under his lip. (00:01:30)
Continuity mistake: At the checkpoint, after the truck gets sprayed with water, the driver begins to drive towards the man with the signal. In the shot where he is driving after the truck has been sprayed, the driver is shown looking straight forwards. In the next shot, the driver is suddenly looking to his left. (00:01:20)
Continuity mistake: Just after the truck driver has drove past the quarantine checkpoint, his phone rings and attempts to reach for it. At first, he is sitting with his back against the seat and extends his arm to reach for the phone. A close-up shot of the phone is then shown where he continues to reach but gets no further. In the next shot, the man is then shown leaning his body out of his seat and forwards towards the phone even though he was sitting with his back against the seat when he began reaching and his hand was not seen moving any further toward the phone in the previous shot. (00:02:08)
