Season 1

Kim Ji-yong loses his mother to a gangster and begins punishing criminals who evade the law.

Choi Mi-ryeo baits the Vigilante with more information on criminals on REPO25h.

Copycat crimes emerge nationwide, and Jo Heon and Choi Mi-ryeo chase after the Vigilante.

The fake Vigilante suggests joining forces, and Jo Heon closes in on the Vigilante's identity.

Mi-ryeo reports on Se-wool's alleged crimes, and Kim Ji-yong and Jo Heon come into conflict.

Ji-yong and Gang-ok help Mi-ryeo continue digging into Kim Sam-doo and the Vole.

The Vole tries to bury the case by sacrificing Kim Samdoo, but Samdoo retaliates with all he has.

Kim Jiyong gathers everyone involved in one location, and the final battle begins.

CHEUNG is meant to attend a pregnancy seminar with KELLY but cannot make it. AH goes with KELLY instead. AH is mistaken at the seminar for KELLY’s husband and does not know whether he should laugh or cry. YIN plays magi…

YIN catches the man, who turns out to be an illegal immigrant. YIN’s subordinates all believe that the killer has already escaped to another country, and that YIN is just overreacting. YIN tells WAH his old scores with …

The killer has been hit twice and arrested. Yin has become a hero at the police station. CHEUNG finds YIN’s holding familiar. She tries to sound YIN out with a thank-you card. CHEUNG knows finally that YIN was the SDU o…

KELLY is at the risk of miscarriage and has to be hospitalized for observation. AH stays by her the whole night. A blood clot has been found in KELLY’s womb. Although the baby is not affected for the time being, KELLY w…

YIN gets along very well with MO and his half sister. He thanks CHEUNG and the two have become closer to each other. REN borrows money from KELLY again. AH comes and drives him away. AH tells KELLY to stand up to REN. A…

AH says he likes YAN just because she looks like CHEUNG. CHEUNG feels uncomfortable yet finds it difficult to speak out. When KIU knows it was KELLY who taught AH to express his love openly, she starts to treat her like…

YING’s accomplice gets the ransom with no difficulty. But he cannot get rid of YIN in the chase and dies in a car crash. YIN has been working night and day. AH reminds him to take care of himself. REN wants to withdraw …

The doctor tells YIN that the bullet in his skull has moved and advises him to take a rest from work for the time being. YIN spends as much time with KEI as possible but means to keep a distance from CHEUNG. REN gives K…

CHEUNG asks YIN about the recent change of his attitude. YIN’s causal explanation, however, only makes her doubtful of him even more. YIN has a relapse and has to rely on medicine. SHING does not want to retire yet, but…

YIN’s car crashes into a lamppost. CHEUNG runs to him and makes him tell the truth. They finally agree to go through thick and thin together. The beauty parlor has to close down eventually. KELLY is sorry that she canno…

HUNG says that he is sacked because he is heavily in debt. AH does not believe him. They fall out with each other. HUNG calls YING a couple of times, but YING, worrying that HUNG is a planted agent, refuses to see him. …

KELLY learns about REN’s death. AH promises to take care of her. WAH asks YIN to have the operation. YIN, though unwilling, passes YING’s case to AH. CHEUNG and YIN plan to visit YIN’s adopted daughter in South Africa a…

YIN went into a coma after the operation. CHEUNG is worried. KELLY, who is a lot better now, goes home to rest. YIN is still unconscious. CHEUNG blames herself and AH comforts her. AH cares a lot about KELLY, giving ris…

YIN comes around from the coma at last. However, his legs have gone numb. The doctor tells CHEUNG something has gone wrong during the operation, and that YIN may not be able to walk again. CHEUNG decides to keep YIN in …

YIN arrives. He raises the fire alarm to signal HUNG not to kill anyone. CHEUNG thinks that YIN has gone missing and so asks her neighbors to help looking for him. YIN feels that he has been a burden to CHEUNG. HUNG wri…

LAM, a councilor, wants to go Canada to escape from YING. HUNG beats him up, so vigorously that even YING is shocked. LAM is rescued the next day and AH believes he is hiding something from the police. AH finds out that…

AH has found some wax on ROCKY’s watch. He has also checked out that REN and YING had bought crystals together. AH visits YIN. They discuss together on how to deal with YING. CHEUNG and KEI take YIN to an unorthodox doc…

HUNG goes to the Chinese restaurant and calls AH an adulterer. It does not take long before they are surrounded by reporters. The killer has no way to carry out his mission. The incident has been widely reported. KING s…

CHEUNG finds that YIN’s drug is still under control. She asks YIN to stop taking it but he does not listen. CHEUNG is hurt. HUNG informs YIN that YING is making a big deal and that his partner owns a boat. KING learns t…

YING beats HUNG up but KING asks him not to kill HUNG. KING lies to WAH and YIN that he has seen AH killing the warden. There is nothing WAH can do but orders to arrest AH. CHEUNG calls YIN, hoping to reconcile with him…

HUNG and AH jump into the sea. Meanwhile, YIN shows up and shoots up the ignition. Not until then does KING realize that YIN has set him up. The time bombs still go on ticking. YIN’s attention has been diverted and KING…

Kelly’s son is ill and hospitalized. AH and KELLY go to get some water for him. When they are back, he is nowhere to be seen. Apparently, YING has taken him away. Meanwhile, YIN leads his team to encircle the hospital. …