The drama tells realistically of the many various troubles that high school students can face. Ra Eun Ho is just one of them, struggling to survive in a school that discriminates against rich and poor, and believes that the best students are the ones with the best grades. Eun Ho is a cheerful, upbeat girl 18-year-old girl who's dream is be a webtoon artist. When she mistakenly gets caught up in another student's effort to send the school into turmoil, Ra Eun Ho is framed as the legendary Student X, a mysterious troublemaker whose identity is unknown, and suddenly, all of her aspirations are put at risk.
Joining her is Hyun Tae Woon, the son of the school's director with a difficult personality and troubled past. In a motorbike accident, he lost his best friend and from there, his life changed. He is uptight, aloof and rude, but as he gets to know the polar opposite Ra Eun Ho, his view on the world changes. He falls in love with her, and together with their fellow students, they decide to stand up against their corrupt school system and make a change.
A forgetful killer can be a dangerous thing. Noh Ji Wook is a prosecutor who changes jobs to become a private attorney at a powerful law firm. Meanwhile, Eun Bong Hee is a prosecutor trainee who works with prosecutor Cha Yoo Jung, Ji Wook’s ex-girlfriend who desperately wants to win him back. Attorney Ji Eun Hyuk is a longtime family friend of Ji Wook’s but harbors some resentment about their different family circumstances.
When a murderer strikes, Bong Hee suddenly finds herself as a suspect in the murder. But it appears the real killer has amnesia, and the killer keeps coming after Bong Hee and Ji Wook. Can the two team up to catch the forgetful killer?
South Korean Navy Special Forces, Captain Jang Hak Soo and 7 members of the KLO (Korean Liasion Office) unit disguise themselves as a North Korean inspection unit and infiltrate the North Korean army command center in Incheon.
Their mission directives from Gen. MacArthur are: 1. Recon enemy forces in Incheon and secure the mine chart, 2. Kidnap ‘Ryu Jang Choon,’ the second highest ranking officer in the North Korean command center, to acquire intel on the naval mine location and 3. On D-Day, light the Palmido light house as a signal to the main UN forces. Only when the light house is lit will General MacArthur initiate the battle to take back Incheon. With everything they got, Jang and the KLO unit charge the lighthouse…
Set in the early 1980's in Heongseong, South Korea. Young Sook is the feared leader of a female gang at the high school. Although she is known for her toughness, she has a secret crush on Joong Gil. Meanwhile, Joong Gil is the school's playboy. He attempts to woo all the girls at his high school except for Young Sook. That's because Gwang Shik, the feared leader of a rival school's male gang, views Young Sook as his woman.
A new female transfer student from Seoul arrives at their high school. She's different from the other girls and beautiful. Joong Gil falls for her instantly, while Young Sook attempts to prevent the new girl from encroaching on her secret crush. Trouble also brews for Joong Gil as Gwang Shik becomes aware of Young Sook stepping in between Joong Gil and the new transfer student.