At Sunjong University, a few students are serious, including Eun-hyo, who works hard at aerobics in hopes of doing well in a national competition. Most students goof off: drinking, partying, and focusing on sex. Eun-shik, a law student who’s been in the military, is older but socially inept. He likes Eun-hyo; even though his earnest and simple side appeals to her, his juvenile excesses make him irrelevant when Sung-ok, a good-looking rich kid, charms Eun-hyo. They begin an affair, leaving Eun-shik on the sidelines. The national competition approaches and complications arise.
Depicts the love lives, jealousies and desires of those that work within the Sanguiwon during the Joseon Dynasty period. The Sanguiwon are responsible for the attire worn by royalty. Dol-Seok (Han Suk-Kyu) is the best master artisan in charge of royal attire. He views set rules as paramount to his job. Kong-Jin (Ko Soo) is a genius like designer, born with dexterity and an excellent sense. He was brought to the palace by nobleman Pan-Soo (Ma Dong-Seok) who first spotted his talent. The King (Yoo Yeon-Seok) and Queen (Park Shin-Hye) then become embroiled in a critical case because of the royal attire made by Dol-Seok and Kong-Jin.
Ji-hyuk is an expert safe-cracker who lives the highlife stealing antiques and jewelry with his team. CHO, a powerful and cruel gang boss threatens them to steal $150 million with him. Ji-hyuk plans to get revenge on CHO, but ends up falling into his trap. However, CHO later realizes it was all part of Ji-hyuk’s scheme. When Ji-hyuk, who was thought dead, reappears, hidden secret relations between the technicians also surface.
On the eve of the founding of the Joseon Dynasty, a whale swallows the Emperor’s Seal of State being brought to Joseon by envoys from China. With a big reward on whoever brings back the royal seal, mountain bandits led by Jang Sa-jung go out to sea to hunt down the whale. But he soon clashes with Yeo-wol, a female captain of pirates, and unexpected adventure unfolds.
Deok-su is a grumpy landlord of a small apartment in Aridong who always pushes the tenants to pay their overdue rent. One day, people in the town, especially the elderly go missing one by one and are eventually found dead. Though the whole town is threatened by a mysterious serial killer, nobody, not even the police have a clue who the criminal is. Then, an old ex-detective Pyung-dal suddenly appears and asks Deok-su for help, saying he can catch the murderer together as he thinks there is already someone suspicious.
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.
Yoo-Suk looks for a girlfriend who disappeared. Ae-Yeon has a fake diamond which her ex-boyfriend gave to her. Ae-Yeon was dumped by her ex boyfriend. Byung-Chan does not believe in love. Bok-Nam is in love with a friend of a friend.