Kim Do Hyung, who works as a bank executive and comes from a well-to-do family, has been dating his girlfriend, Yoon Joo Young, for the past two years. He asks her to marry him, but Joo Young is tormented by his proposal and is terrified that Do Hyung will find out about her checkered past. After Joo Young makes up her mind to accept the marriage proposal, she suddenly disappears without a trace.
When Do Hyung files a missing-person report with the police, officer Cha Yoon Mi is surprised to learn that Joo Young is someone she knows from her past but can’t offer much help to Do Hyung. When Do Hyung undertakes the search for Joo Young on his own, he is drawn into the shadowy underground world of gangsters and loan sharks.
When Song Hak Soo, the leader of an underground crime syndicate who was recently released from prison, suddenly shows up dead, Do Hyung inexplicably becomes the prime suspect in the murders of Hak Soo and Joo Young, although she is still missing. With Yoon Mi and her partner, Park Hyung Shik, hot on his heels, can Do Hyung find Joo Young and clear his own name?
When Do Hyung files a missing-person report with the police, officer Cha Yoon Mi is surprised to learn that Joo Young is someone she knows from her past but can’t offer much help to Do Hyung. When Do Hyung undertakes the search for Joo Young on his own, he is drawn into the shadowy underground world of gangsters and loan sharks.
When Song Hak Soo, the leader of an underground crime syndicate who was recently released from prison, suddenly shows up dead, Do Hyung inexplicably becomes the prime suspect in the murders of Hak Soo and Joo Young, although she is still missing. With Yoon Mi and her partner, Park Hyung Shik, hot on his heels, can Do Hyung find Joo Young and clear his own name?
After his mother is brutally murdered in front of him by the Thai criminal syndicate Cheongbang, Lee Soo Hyun is adopted into NIS agent Kang Jung Ho's family. Together with Kang Min Gi, Jung Ho's son, Soo Hyun becomes a NIS agent. When Soo Hyun met Suh Ji Woo they were about twelve years old and has another fateful encounter with her 13 years later. Together, they had promises for the future. One day, Soo Hyun leaves for an operation dealing with the Cheongbang, only to return in failure because of the resurfacing terrible childhood memories of when he was in Thailand. The chief of NIS agents, Jeong, proposes to the distraught Soo Hyun to infiltrate the Cheongbang. Through Chief Jeong's proposition, Soo Hyun becomes an undercover NIS agent after staging his death. Hiding his past, Soo Hyun infiltrates the Cheongbang with revenge in mind, leaving Ji Woo behind. Under the pseudo-name of Kay, he passes through the backstreets of Bangkok. What Soo Hyun didn't know was Ji Woo is the daughter of the same villain, who killed his mother and father.
Tae Soo is a devoted family man at home but a ruthless mobster at work, caught between caring for his family and navigating gang politics. As a dutiful son to his mother, he worries about his own future without similar support from his children. Meanwhile, he juggles gang pressures, evades authorities, and justifies his life as "just making a living."
A former crime boss walks away from that life, but his dad won’t let him be. Dad insists that he take over the enterprise. ML reunites with his childhood sweetheart, but he hides his true identity from her. The plot sounds rough and dark, but it was actually a fluffy romcom. Kinda crazy how they mixed those opposite elements yet created a warm, delightful, and funny drama.
