E1 - Episode 1

Aired: January 04, 2025

Coming from two different backgrounds, Gong Ryong and Eve Kim embark on a space mission. But trouble strikes after launch, jeopardizing their expedition.

E2 - Episode 2

Aired: January 05, 2025

Upon arriving in space, Ryong panics as Eve threatens to ruin his secret mission. Shortly after, a crisis emerges, forcing Ryong to attempt a novel feat.

E3 - Episode 3

Aired: January 11, 2025

Determined to carry out the secret mission himself, Ryong tries to circumvent Kang Kang-su. During a space walk, Eve experiences a sudden problem.

E4 - Episode 4

Aired: January 12, 2025

With Eve's life in jeopardy, Ryong watches helplessly — as protocol prevents him from saving her. With every passing second, she loses precious oxygen.

E5 - Episode 5

Aired: January 18, 2025

Following Ryong's sudden confession, Eve discovers a hurtful truth unfolding back on Earth. Soon, she learns of an even more disturbing reality in space.

E6 - Episode 6

Aired: January 19, 2025

Eve discovers an unethical secret, forcing her to act decisively despite Ryong's objection — which drives him to take matters into his own hands.

E7 - Episode 7

Aired: January 25, 2025

After Ryong learns the results of his experiment, a potential calamity approaches the crew — threatening his safety and the survival of his work.

E8 - Episode 8

Aired: January 26, 2025

Eve risks everything to heroically rescue Ryong, facing treacherous danger. However, returning home seems increasingly improbable.

E9 - Episode 9

Aired: February 01, 2025

With Ryong and Eve stranded in space, those on Earth scramble to save them — albeit for different reasons. Park Dong-a steps forward to take the risk.

E10 - Episode 10

Aired: February 02, 2025

Despite their promises in space, Ryong and Eve return to earthly realities — facing duty, recovery, suspicions, confessions and lingering longing.

E11 - Episode 11

Aired: February 08, 2025

While Ryong and Eve adjust to normal life, Chief Kang requests a detailed report of their time in space — leading them to agonize over their story.

E12 - Episode 12

Aired: February 09, 2025

Choi Go-eun confronts Eve after encountering her at Ryong's place. Chief Kang advises Eve not to see Ryong again — despite Eve's true desires.

E13 - Episode 13

Aired: February 15, 2025

Chief Kang summons Ryong and Kang Kang-su regarding their forbidden experiment in space. Eve uncovers a painful truth about her past.

E14 - Episode 14

Aired: February 16, 2025

A deployed investigative team discovers Ryong's cell phone in space — sparking an inquiry into who is responsible for the unauthorized events there.

E15 - Episode 15

Aired: February 22, 2025

The consequences of the experiment in space finally manifests, leaving Ryong devastated. Later, Eve learns that her life is about to change forever.

E16 - Episode 16

Aired: February 23, 2025

As Eve's new state prevents her from coming back to Earth, Ryong commits to joining her in space. Once there, they debate a risky return to Earth.