Jjang-gu joins "Monster," a violent organization at his high school. As a rite of passage, he learns a lesson about being a man while following the course.
When an earthquake hits a Korean village housing a run-down nuclear power plant, a man risks his life to save the country from imminent disaster.
Soo-hyun comes across magical pills that allow him to go back and forth in time. 30 years to the past, young Soo-hyun meets future Soo-hyun and learns that his girlfriend will soon die because of him. In order to save her, the two Soo-hyuns try to change the past together, but a completely new and unexpected past is formed that leads to a new future.
Despite their different family backgrounds, four friends grew up together in the wearisome years of the 70s. But as time goes by, each of them takes a different life path.
Major crimes unit detective Seong-jin arrests Tae-sung for petty crimes, but shocked to find out that he is the notorious serial killer. However, Seong-jin becomes doubtful of his identity as the serial murder case is investigated.
A wily safecracker is forced to help a mob boss pull off a $150 million heist, but smells a double-cross in the works.
The owner of a student study center gets an awkward request and suddenly faces the prospect of raising her dead husband’s teenage son by herself.
Dae-gil has been skilled with his hands and has shown a strong desire for winning ever since he was a child. He will succeed his uncle and jump into the world of Tazza, risking his life in competition.
A couple of smugglers don't know what to do when one day their boss gives them a kidnapping job.
On Haeundae Beach, a guilt-ridden fisherman takes care of a woman whose father accidentally got killed. A scientist reunites with his ex-wife and a daughter who doesn't even remember his face. And a poor rescue worker falls in love with a rich city girl. When they all find out a gigantic tsunami will hit the beach, they realize they only have 10 minutes to escape.
After he leaves the police force, Dae-ho establishes himself as the sheriff of his town. He then investigates Jong-jin, a businessman, because of his alleged ties to drugs.