A mystery mini-series with a story that revolves around a promise that refuses to go away over time and characters who are faced with tough decisions to keep that promise. To keep their values, characters are at a critical juncture to act upon their promises. Lovers, played by Han Chae Young and Lee Byung Hun in this romantic mystery by Lee Jae Kyu tells a love story that transcends more than 100 years (1907-2010).
Kim Hyun Joon is an assassin who belongs to a top secret organization known as the "NSS" whereas T.O.P is an assassin who works in another secret organization located in the United States called "IRIS" and was ordered to kill Hyun Joon. Seung Hee is a psychological analyst who plays an important role in bring Hyun Joon into the "NSS." Jin Sa Woo is Hyun Joon's enemy and falls in love with Seung Hee as well.
The background is the wilderness of 1930s Manchuria. The Bad (a hitman) is hired to acquire a treasure map from a Japanese official traveling on a train, The Weird (a thief) steals the map from the Japanese official when he robs him on the train. The Bad just after manages to stop the train and a slaughter of Japanese and Manchurian guards ensues. The Good (a Bounty hunter) appears on the scene with his shotgun in hand and tries to kill The Bad. Meanwhile The Weird manages to escape to the Ghost Market, to figure the map out and escape from his pursuers. In this unpredictable, escalating battle for the map with the Japanese Army, and Manchurian bandits also after the map, who will survive and claim the supposed treasure?
An assistant to a TV producer, eager to stay off his bad side, promises to convince her former professor, a famous but reclusive academic, to appear on their show, which helps locate long-lost persons. Who does grey-haired Professor Yun Suk-Young want to see agin more than anything? The answer to that question lies decades in the past. 1969 was a tumultuous year the world over, and South Korea was no exception. President Park Chung-Hee’s iron-fisted dictatorship has provoked a backlash among angry students, and trouble is brewing. Suk-Yong and his comrades decide that Seoul is getting too tense, and embark on a summer retreat in the countryside, where they will help bring a rural village up to date with the modern world. But Suk-Young discovers pretty Seo Jung-In, the only local girl who shows no interest in the strikingly handsome student from a well-to-do family –- and that, of course, means he’s soon falling head over heels for her. Their bumpy courtship, however, is threatened by dark secrets that Jung-in hides about her family and their history in the village, secrets that will haunt the pair as the volatile political climate catches up with them.
As a kid, all Kim In Ha ever did was follow his uncle around and help him cheat in gambling. As a high school student, he hung out with his friends at the basement of a theater. As Kim In Ha gets to know Choi Jeong Won, a model student and also the son of a very rich family, In Ha tries to tempt him into doing mischevious deeds.
Young-jun, president of Young-Eum Music, fights the conspiracy of Sungchoon, president of rival company, Victory Records. But he ultimately dies while fighting. Sungchoon and his people cover up Young-jun's death as an accident. Young-jun's wife, Myungja, gives birth to their son, Sung-jae but due to Young-jun's sudden death, she falls into grief. Sungchoon has also been raising his children, Min-chul and Min-ji, alone after his wife's death. He proposes to Myungja and she accepts.In the meantime, at an orphanage, Yeon-soo and Sae-na, two orphans as close as sisters, are preparing for a birthday party for just the two of them. Coincidentally, the president of Victory Records, Sungchoon and his son, Sung-jae, happen to visit the orphanage.Time passes and … Yeon-soo works hard at making a living by teaching art and working at a restaurant. On the Christmas when Yeon-soo and Sae-na promised to meet, Yeon-soo is involved in an unexpected car accident and is unable to keep her promise. From then, they walk separate paths without learning of each other's whereabouts.