A serial killer ruthlessly hunts down a deaf woman through the streets of South Korea after she witnesses his brutal crime.

On the afternoon of the day before her school trip, Se-mi wakes up from her strange dream and heads to her Ha-eun. It was because she felt like she had to convey the feelings she had been holding back for a long time today. However, unlike her overflowing heart, the two keep falling apart.

Dreaming of making a way station for his sister and the villagers who have no choice but to commute along the dangerous train tracks every day, Joon-kyung sends many letters to the President, but with no reply. Ra-hee, who has a crush on Joon-kyung, does everything she can to help him meet the President.

Skill, beauty, personality, ‘Diving Diva’ Lee-young has it all. Not being able to be with her best friend Su-jin is the only thing that gets in her way. Just so she can help Su-jin out, she changes her event to synchronizing swimming. While pouring everything to Olympics selection practice, Su-jin and Lee-young are involved in a freak accident. Su-jin disappears without a trace, while Lee-young survives but loses her memory. Lee-young’s memory slowly comes back to her but remembers strange side of Su-jin. Her iron will begins to shake on the diving board.

The members of a supernatural exploration club called 0.0MHz explores a haunted house to prove the existence of frequencies that attract ghosts.

Berlin in 1986 was a time when everyone was wary. A man becomes everyone's target because of one mistake. Economist Young-min is convinced by a Northern spy to move North under the pretext of safety for his family and himself. However, he realizes this is a mistake and escapes to West Germany where he is parted from his family. To make things worse, he is under surveillance by various countries that want to use him for different purposes.

A gym teacher and his female student look for her missing friend. But as they investigate, they find that her disappearance is a part of a larger conspiracy.

So-Eun is a safe breaker planner. She plans a heist with expert safe breaker Jang-Choon and thief-actor Cheol-Soo. They dream of changing their lives with this job. Meanwhile, Gyu-Cheol is former elite prosecutor, but he lost his memory in a mysterious accident. Nowadays he does foolish acts.

Seok-jin, a magician at a club, meets a mysterious woman, Ha-yeon, who soon becomes his assistant and fiance. Things take a turn when she is found dead and he must find out what happened.

Lee Hyeong is a talented songwriter. He happens to connect people who are not good with love. Those include Hyeong-Gyeong who wants to become a singer, but she suffers from stage fright. Scully is a high school student. She helps Lee Hyeong's spirit. Chan-Young is a colleague of Lee Hyeong and he likes Hyeong-Gyeong, but in vain.