Vincenzo Cassano is an Italian lawyer and Mafia consigliere who moves back to Korea due to a conflict within his organization. He ends up crossing paths with a sharp-tongued lawyer named Cha-young, and the two join forces in using villainous methods to take down villains who cannot be punished by the law.
The story of a mysterious taxi service that takes revenge on behalf of victims who are unable to get justice from the law. Kim Do Ki is a mysterious driver for the taxi company whose mother was murdered. Kang Ha Na is a passionate attorney. Go Eun is an IT specialist, while others consider her a hacker. Along with Kim Do Ki, she works as part of Rainbow Taxi Company to solve people’s problems.
Seo Yi-Gang is the best ranger at Jiri Mountain National Park. She knows virtually everything about the area, including where to climb the mountain. Kang Hyun-Jo is a rookie ranger at Jiri Mountain National Park. He graduated from the military academy and was once an army captain. He has a secret that he can't tell anyone about. These two people become partners and they work to save people around Jiri Mountain National Park.
Stuntman Cha Dal-geon gets involved in a tragic airplane crash and ends up discovering a national corruption scandal in the process. Go Hae-ri, the oldest daughter of a deceased marine, decides to work for the National Intelligence Service as a secret ops agent in order to support her mom and younger siblings, although all she wanted to do is to become a civil servant.