Da Rim is the youngest child of a family that runs a laundry shop. She has a vibrant character, but she was diagnosed with a rare eye disease at 14 years old that would slowly narrow her vision. Time goes by, and Da Rim slowly begins to lose her vision. She attempts to do everything she can before she can't see anymore, like reading all the books and movies in the world and even more. Right before Da Rim loses her sight completely, Gang Ju, a college alumnus and the son of a conglomerate family, shows up before her. Their relationship becomes twisted due to a careless slip of the tongue, and Gang Ju becomes a hated man due to an unexpected accident. One day, her family learns that she can regain her vision with an expensive surgery they could never afford. However, her grandmother Ahn Gil Rye finds something unfathomable in the hills while picking wild herbs. Could this be something that lets Da Rim see the world again?

Do Ki seals the end of the painful vengeance against his mother's killer, but the wounds remain. The whistling that reminds him of his mother's last moment still lingers around his ears. Ha Joon newly joins Rainbow Transport as a troublemaker taxi driver, and he holds Do Ki as his role model. Ha Joon accidentally finds a secret passage that leads to the underground maintenance room. What is this place for? How will Do Ki's vengeful journey for the victims unfold along with the precious people around him?

He wins every criminal case in the day as a prosecutor, and he's a trophy husband and father to his family at night. Jung Woo's life is perfect, but a murder that takes place in his home on the night of his daughter's 6th birthday changes it all for him. He wakes up in a prison cell, knowing nothing about what happened that night, but he happens to find himself with four fellow prison mates who help him to find justice for his family. Fighting one trial at a time, while suffering the effects of short term amnesia, Jung Woo makes his way to Min Ho, a chaebol who happens to have some issues with him. Though he's a seasoned law enforcer, Jung Woo knows that he's against South Korea's giants, and his case will be a tough cookie to swallow. Will justice prevail, or would corruption persist?

Young Jin's supposedly a full-time mother, but she's also got the duty of being one of Seoul's best detectives under the country's police force. Because she loves her job more, Young Jin sticks to her duties as a badass detective against one of the country's toughest chairman. Chairman Kang also seems to be one of the people behind her father's death, which infuriates her the most about this prime suspect.

Once part of Korea's top-secret National Intelligence Service, a group of talented female agents is reassigned to go undercover in a case involving corruption and leaked trade secrets at the country's largest conglomerate. After several mistakes during important missions, Chan Mi was reassigned to the cybersecurity team but dreamed of returning to her former role. Mi Soon has left agent life behind and become a full-time homemaker. Meanwhile, Ye Eun, a smart, single mom and desk agent, dreams of being promoted to an undercover spymaster working in the field. Their lives collide when Kwan Soo, a longtime director in the NIS, recruits all three for a do-or-die mission.

For her work, best-selling crime author Yeo Joo researches how to make a murder look like an accidental death. Next to her is her younger husband, Woo Sung, who is a family man and works as a divorce lawyer. Woo Sung still thinks he's a sexy, attractive partner and lives on with his wonderful marriage life. However, lately, Yeo Joo, who would rather be a widow than a divorcee, starts finding some of his behavior suspicious. Yeo Joo tells it straight: If he cheats, he will die.

Yeon Ju is an elite prosecutor who started from the bottom. Although known as the best in corruption investigations for the Supreme Prosecutor's Office, she suffers amnesia after a car crash when chasing a suspect. As she wakes, she finds herself being Kang Mi Na, the daughter-in-law of the conglomerate Hanju Group. Before her disappearance, Mi Na was a troublemaker born out of wedlock. Now sitting in her position, Yeon Ju is not able to hide her rough and outspoken nature. She then meets Seung Wook, a conglomerate who visits his first love Mi Na to reveal the truth of his father's death. Will Yeon Ju and Mi Na be able to regain their lost memories in this mystery and succeed in true love?

Tae Yong, a high school graduate and now lawyer, only believed in his conception dream of a dragon descending from the sky. Since he can't find any clients or a law firm who want to work with him, he becomes a public defender for just $300 per case. However, Tae Yong gets rich by defending all kinds of petty criminals. By winning the retrials of various criminal cases, he decides he wants to become the voice of the jurisdiction's victims. After figuring out that he can't change the world all by himself, Tae Yong works with Sam Soo to "stick it to the man." After miraculously getting accepted into college, Sam Soo used to be a successful journalist with many talents, but now, he's currently jobless.