A group of space experts and astronauts must embark on a 24-hour mission to the moon and bring back mysterious samples on Balhae Base research station. As crew members begin to die one by one unexpectedly, however, they find that many more forces than they’d expected seek to threaten their mission. 

Meet the crew who risks it all on an adventure that’s literally out of this world.

Song Jian (Doona Bae)

Title: Astrobiologist

Background: Jian has her own secret reasons why she decides to embark on this mission. 

Notable Info: Before the mission, Jian switched fields from astrobiology to ethology, the study of animal behavior.

Han Yunjae (Gong Yoo)

Title: Captain of Nuri 11

Background: Yunjae is tasked with bringing classified samples from Balhae station back to Earth. His sole focus is to complete the mission. 

Notable Info: He’s cool and reserved and, at times, inflexible. He leaves behind a daughter on Earth.

Ryu Taesuk (Lee Joon)

Title: Lieutenant Engineer

Background: Taesuk is a former pilot with military training who’s transferred into the engineering field.

Notable Info: He’s highly regarded by his peers and considered “elite.”

Hong Gayoung, aka Doc Hong (Kim Sun-young)

Title: Medic

Background: Gayoung’s a team player who handles medical crises — including mysterious and unknown space viruses — swiftly and deftly. 

Notable Info: She’s deeply caring of her team, despite her initial sass.

Gong Soohyuk (Lee Mu-saeng)

Title: Security Team Leader

Background: Soohyuk’s the older brother of Gong Soochan, who’s also on the mission. 

Notable Info: A man of few words, Soohyuk is mission-oriented and loyal to Captain Han.

Kim Heesun, aka Kim Sun (Lee Sung-wook)

Title: Pilot

Background: The crew calls him “Kim Sun,” but Heesun refers to himself as “Top Gun.”

Notable Info: He’s outspoken and seen as the class clown. Having served many years together, he and Soochan are close.

Gong Soochan (Jung Soon-won)

Title: Engineer

Background: Soochan is the younger brother of Gong Soohyuk, and he’s close with Kim Sun.

Notable Info: He’s friendly and an efficient team player. 

Lee Gisu (Choi Young-woo)

Title: Co-pilot

Background: Gisu is the last pilot to join the mission. 

Notable Info: He’s loud-mouthed and speaks his mind, whether his counterparts want to hear it or not.

E1 (Cha Rae-hyeong)

Title: Part of Security Team

Background: Despite his position, E1 is good-natured. 

Notable Info: He’s loyal to the team.

E2 (Yoo Hee-je)

Title: Part of Security Team

Background: E2 will stand up for what he believes in. 

Notable Info: He’s mission-oriented and puts the team before himself. 

Mr. Hwang (You Seong-joo)

Title: Advisor

Background: Mr. Hwang is the only team member that has been to Balhae station. He took part in Balhae’s construction and also spent time there as part of the research team. 

Notable Info: He possibly knows more about what happened at Balhae station than he lets on. 

Director Choi (Gil Hae-yeon)

Title: Director

Background: Director Choi oversees the SAA and instructs Captain Han that the sole objective of the mission is to bring back samples — at all costs. 

Notable Info: Steely and political, Choi shares only what she deems necessary. 

Mr. Kim (Heo Sung-tae)

Title: Section Chief in the Space Aeronautics Administration (SAA)

Background: Mr. Kim oversees the Nuri 11 team and mission.

Notable Info: He was recently promoted to an upgraded water classification, Level B.