Main Cast
![The Silent Sea - Cast, Summary, Synopsis, OST, Episode, Review](https://www.gluwee.com/wp-content/uploads/2021/12/Bae-Doo-Na.jpg)
Bae Do Na as Sang Ji An
She is a doctor and astrobiology expert in the team. she has a mission to uncover the accident in the Balhae Base that has left in the moon.
![The Silent Sea - Cast, Summary, Synopsis, OST, Episode, Review](https://www.gluwee.com/wp-content/uploads/2021/12/Gong-Yoo.jpg)
Gong Yoo as Han Yoon Jae
The leader of the team who has a mission to take the sample with limited information. He is brave to save his member and sacrifice himself to the group.
![The Silent Sea - Cast, Summary, Synopsis, OST, Episode, Review](https://www.gluwee.com/wp-content/uploads/2021/12/Lee-Joon-1.jpg)
Lee Joon as Ryu Tae Sook
A captain and head of the engineer. He is an elite member of the ministry of national defense. He joins voluntarily in this mission to run away from his toxic environment.
![Kim Sun Young as Hong Ga Young](https://www.gluwee.com/wp-content/uploads/2021/12/Kim-Sun-Young.jpg)
Kim Sun Young as Hong Ga Young
The doctor of them who has a task to help the member from any accident in the mission
![Lee Mo Saeng as Gong Soo Hyuk](https://www.gluwee.com/wp-content/uploads/2021/12/Lee-Mo-Saeng.jpg)
Lee Mo Saeng as Gong Soo Hyuk
The head of security who has chosen to join the mission.
Read also: Pumpkin Time – Cast & Summary
Supporting Cast
- Heo Sung Tae as Kim Jae Sun
OST (Original Soundtrack)
- –