For the first time in history, Korea releases news of a new camp for young hopefuls interested in space travel.. SCK(Space Camp Korea). The new facility attracts much attention and students from around Korea and even Europe flood in to learn

When Jung Taekwoon, one of the smartest pupils in his class, who has always been interested in space travel, enrolls at SCK, he learns so many things during the first few weeks. In this process, he befriends students who are also just as involved as him. Cha Hakyeon, Lee Jaehwan, Kim Wonshik, Lee Hongbin, and Han Sanghyuk

Cha Hakyeon- A goofy twenty-year-old who had just graduated high school. His wish has always been to attend college and take a class on space travel or astronomy, and maybe even attend space camp in the U.S.. After news came out that there was a new camp in Korea, there was no turning it down. Hakyeon had always been a hard worker all through high school and could brag about his good leadership. People always misunderstand his drive to educate himself and label him as a slacker. But in reality, he's very hardworking and takes his work seriously

Lee Jaehwan- A loud, obnoxious 18-year-old who had dropped out of high school to attend space camp. Like Hakyeon, Jaehwan is very deticated to his work and channels all his focus on what needs it the most. He's been best friends with Sanghyuk since Sanghyuk was brought into this world and has never left his side. When Jaehwan heard about SCK, it was a hard decision to leave high school. But in the end, it was out of the question for him. He'd been interested in space travel and astronomy since he'd been able to read.

Kim Wonshik- A very immature 17-year-old student, and probably the least interested in SCK. Wonshik is truthfully fascinated by outer space and space exploration. But he is indeed, the perfect slacker and never takes anything or anyone seriously, earning him a bad reputation amongst his peers, and bad relationships with adults, such as teachers and his own parents. Wonshik wasn't exactly planning to attend SCK, but when his parents heard the news, they didn't hesitate to send their son away, making Wonshik realize that he needed to buckle down and hopefully reconstruct his relationship with his parents.

Lee Hongbin- A quiet and funny 17-year-old student who, like Jaehwan, dropped out of high school to attend SCK. Hongbin is also a good friends with Jaehwan and Sanghyuk and made a promise to protect his best friend Sanghyuk. During his time at SCK, Hongbin befriends Taekwoon first and becomes his only source of real comfort. Hongbin has a great sense of humor but also takes his work seriously. He'd been interested in space travel and has dreamt of being an astronaut multiple times. 

Han Sanghyuk- a happy and sheltered 16-year-old boy, and youngest among his group of friends that he made during his stay at SCK. He's childhood friends with Jaehwan and best friends with Hongbin. Hongbin tries his hardest to protect him but Sanghyuk is ungrateful for Hongbin's efforts because the last thing he wants is to be treated like a child. During his stay at SCK, Sanghyuk befriends an old and broken robot he names Rovix that he finds in a storage unit. Using his vast knowledge of robotics and engineering, Sanghyuk fixes Rovix and begins to talk to him in private.. Sanghyuk is bullied mercilessly when his hyungs find out about Rovix and almost break him. This angers Sanghyuk and he decides to keep Rovix in a safer place. But Rovix is smarter than Sanghyuk thinks

 Jung Taekwoon- a quiet and warm-hearted 20-year-old, fresh out of high school, like Hakyeon. He's extremely quiet and had been bullied in school, getting called names like "retarded" or "autistic". During his years in school, Taekwoon would flee his house at night and secretly take late night classes on astronomy and space exploration at community centers. Even though he was told many times to stay home and was scolded by his parents, Taekwoon chose the classes over sleep and performed poorly on tests and homework because of lack of rest. Because of his bad scores, he is considered uneducated, but he is one of the smartest students in his school. Taekwoon tried so hard to enroll in Space Camp in the United States, but was always rejected because of his poor grades, but he never wanted to quit. When Taekwoon wanted something, he'd get it one day. No questions asked.. At SCK, Taekwoon befriends Hongbin quickly but doesn't have any nice words to say about Wonshik because of his lack of interest. But soon, because of certain events, all six boys become good friends and hopefully, one day, the world's best Korean astronauts.