Kim Yong Hwa, one of the most prominent genre directors in Korean cinema, returns with his most ambitious and spectacular film to date. Korea's first manned mission to the moon ends in a tragic disaster when an explosion occurs on board. 7 years later, a second human spaceflight is launched successfully but a strong solar wind causes it to malfunction. One astronaut Sun-woo (D.O), is left stranded in space. Facing another fatal catastrophe, the Naro Space Center turns to its former managing director Dr. Kim (Sul Kyung Gu) to help bring Sun-woo back home safely.