"The Silent Sea" episode 3 showed that Gong Yoo, Bae Doona and the rest of the elite crew slowly noticed that the expedition was not just an ordinary space mission as the casualties began to pile up.
After Dr. Hwang, who died on the way to the Balhae Lunar station, two other members died mysteriously.
'The Silent Sea' Episode 3 Highlights: Captain Han's Team Faced with Two More Casualties
"The Silent Sea" episode 3 opens with three teams inside their respective storage areas.
Astrobiologist Song Jian hurried to get to the location after getting a radio transmission that copilot Lee Gi Su was not responding. As soon as she reached the front door, she saw Gi Su being pulled back to the room by an unidentified creature.
After entering the storage area, Song Jian witnessed how he fell from the ceiling. Due to the strong impact, Gi Su died on the spot.
The female astronaut tried to retrieve the sample but was afraid that the shadowy creature might do the same to her.
Minutes after the incident, Chief Gong Soo Hyuk and Captain Han saw Song Jian crouching on the floor and seemed to be traumatized by the whole scenario.
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On the other side of the Balhae Lunar station, Gong Soochan suddenly felt odd and began to sweat profusely, signaling that the infection had spread all over his system.
As their group reached the command center, pilot Kim Hee Sun noticed that something was bizarre with Soochan's actions and began to vomit an infinite volume of water.
With this, Doc Hong advised everyone to wear hazmat suits as a safety precaution.
In hopes to treat Soochan, the team's medic incision a tube on his neck but was surprised with the amount of liquid spurting.
"The Silent of the Sea" episode 3 also featured Soochan drowning, hinting about the cause of his death.
Song Jian and Doctor Hong Confirm the Cause of Death
Following Soochan's mysterious death, Song Jian and Doc Hong examined the samples they got from his body and the others.
She figured out that his death might be similar to the previous crew who didn't make it during the first expedition.
The duo found out that the cause of death occurred inside the space station and not because of a particular virus or bacteria.
Moreover, Song Jian thinks that the unidentified substance made the patient drown to death.
Captain Han Tracks the Mysterious Creature
After losing two of his members, Captain Han needed to prevent further casualties, which meant that he had to eliminate the intruder.
However, Song Jian explained that the creature who killed Gi Su did not even attempt to harm her but rather mentioned that it is essential to keep a distance.
In addition, she raises the suspicion that the intruder might be one of the survivors.
