Now that "The Silent Sea" episode 8 has reached the finale, the storyline features a surprising twist between the survivors' Bae Doona, Gong Yoo, Kim Sun Young, Lee Moo Saeng and villain Lee Joon.
With the finale episode focusing on the survival and emotional attachment towards Luna, it also ended with a cliffhanger about the future of the Earth and the girl, who was dubbed as "the salvation."
'The Silent Sea' Episode 8 Recap: Covering Up the Mission
The eighth and last episode featured a glimpse of what happened in the first expedition and showed that the military, whom they thought were rescuers, killed everyone, including Song Jian's sister.
At present, the astrobiologist raised suspicion that the government tried to cover up the incident knowing that human experiments and cloning were both illegal.
READ MORE: 'The Silent Sea' Episode 7: Will Bae Doona, Gong Yoo and the Rest of the Team Survive the Mission to the Moon?
"So that means the reason the government shut this station five years ago was because they cared more about hiding the experiments than the results," Doc Hong mentioned.
However, Chief Gong Soo Hyuk expressed a different opinion and noted that revealing the information discovered inside the station was an act of treason that made the doctor furious.
On the other hand, Song Jian explained that she now understands why Director Choi wanted her to join the expedition and that it is to discover what her sister has committed as a head researcher.
Is this the End for Song Jian?
To recall, episode 7 showed that the station is slowly being submerged in the lunar water.
The finale featured how the remaining astronauts managed to escape the area with the help of Luna.
Unfortunately, Song Jian felt odd and saw the symptoms of the infection.
She locked herself in the room and vomited a massive amount of water. Thankfully, the astrobiologist remained alive because of Luna's bite, which acted as an antidote.
Lieutenant Ryu Tae Suk Devastating Fate
As the team escaped from the tunnel, they came face to face with Lieutenant Ryu Tae Suk, who now experienced the effects of the infection.
He is hallucinating and recalling what he did during the first expedition. He asked Song Jian for forgiveness as "The Silent Sea" finale illustrates what went wrong during the first mission.
Instead of rescuing the team, Ryu Tae Suk and his men were tasked by the government to kill all aboard the Balhae Station, including Song Jian's sister.
Meanwhile, Chief Gong Soo Hyuk sensed a great danger ahead of them; he fired at the lieutenant but was also shot by Ryu Tae Suk, causing a fatal injury.
The survivors ready their spacesuits at the airlock room, including Luna; unfortunately, Gong Soo Hyuk failed to make it.
With only a last step before they get out alive at the station, Captain Han sacrificed himself to activate the decompression chamber from outside the airlock room.
He also tells Song Jian a parting message saying "Where Luna goes, you go."
Although this seems hard on the astrobiologist and Doc Hong, both escape the station but are almost carried away by the massive pressure from the inside.
Fortunately, they survived but noticed that Luna was missing.
Interestingly, the two survivors were surprised to see the girl without any spacesuit and goes near the dying Captain Han.
As "The Silent Sea" episode 8 nears its ending, a spaceship arrives and the trio were rescued along with the samples.