Choi Young-woo

During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified secrets.

Seo-Jin is a popular architect. He suffers from a trauma when his younger sister Yoo-Jin went missing. 25 years after her disappearance, Yoo-Jin comes back to her family. Seo-Jin feels something is not right with Yoo-Jin.