Arik Arbel is a cop with an attitude. He tries to find the balance between his demanding job, being a parent to his son and his problematic relationship with his ex-wife. Together with Arik in the unit serve Moti — an experienced field cop, Arik's loyal friend Ezra — a nerdy old timer, and Alex, a new and highly motivated female cop. At the core of the first episode a shattering event occurs that shocks the unit members and leads Arik to an act that will change his life.
The body of a young woman is discovered in an orchard. All signs indicate that this is a murder to safeguard family honor, but the unit can't find a witness to help them identify the guilty parties.
Two teenage girls are crucially wounded in a hit and run accident. The detectives are sent out to solve the crime as soon as possible since one of the girls is the daughter of an important politician. When Arik discovers the man was his army commander, he turns the search for the guilty party into a personal crusade.
After a violent attack at the central bus station, the unit dives into the danger filled life of Sudanese refugees and discover that a surprising element is behind Sudanese activities. Arik tries, in his unique manner, to deal with the fact that his ex-wife has a new partner.
A teacher at an orthodox school is attacked by anonymous men at a late night hour. When Arik investigates the case, he discovers that the crime was instigated by a member of a known crime family. Assaryan Babayev begins to get back into action.
A young man claims he was raped by the security guard of a senior army officer. Alex is beside herself when the investigation is brought to a stop by the Army. Arik finds himself being exposed to blackmail.
When a stripper falls victim to a violent crime, Arik recalls a past murder that never left his mind. Working with Alex on the confusing case leads to a shift in their relationship.
When Arik and Moti follow a car thief, a non-standard collaborator is discovered. The stakeout of the collaborator brings the two to a compromised situation in which they are forced to request assistance from an age old opponent from the Israeli Secret Service. Moti beginstyo suspect Arik is in over his head.
The police station is in lockdown after a prisoner manages to get away after attacking Ezra during an interrogation at the station. All the station personnel go hunting for the fugitive.
A crew of cruel assassins arrives in the country. When their target and the person who ordered the assassination is revealed, the police, the international crime unit and even Babayev go after them.
The hunt for the assassins reaches its peak when some of our heroes find themselves in mortal danger. Meanwhile Yoni Bar- On, the internal affairs investigator, chases after Arik and tries to set him up. During the chase, Alex and Arik discover suspicious information about each other.
Arik and Moti investigate a rough homicide which points in a surprising direction and leads Arik to get entangled with an enemy that he doesn't know how to deal with. Alex tries to balance work at the police, her flourishing relationship with Arik and her renewed relationship with her mobster father.
A mysterious hit man eliminates people connected with Babayoff and causes a gang war. Arik suspects that Alex is concealing information from him with regards to Anatoli. Sharon Even-Tov, an internal Affairs Investigator, starts questioning the people closest to Arik.
Arik and Alex investigate a brutal murder of an Ethiopian woman which turns out to be much more complex and mysterious than they thought. Lital takes advantage of the investigation to get close to Arik.
Arik and Lital are sent to a forest up north to imprison an escaped convict who has joined a band of illegal hunters. Lital uses the opportunity to get closer to Arik. Alex discovers that in order to protect Anatoli, she needs to bend the rules.
A serial killer escapes from prison and Arik and Alex are sent to imprison him. Ezra discovers that he is being followed, and the Sheinberg investigation turns out to be more complicated and dangerous than expected.
Arik and Moti search for a burglar who stole a computer from Yahli. Arik, riddled by feelings of guilt that he is responsible for Yahli's injury, scorches through the whole city of Jaffa. Lital and Arik get close and his secrets are exposed. Sheinberg starts acting against the reporter covering him.
Ezra discovers that Arik is connected to the gun which shot Babayoff, causing Arik to initiate a deal between them and increase the pressure on Sheinberg, while the price may be the life of his source.
The hitman sent by Babayoff follows Arik to Avigdor's farming community. Alex tries to get Anatoli to help Arik. The investigator Sharon Even Tov pressures Lital to close in on Arik, and Sheinberg does everything in his power to stop the police.
Arik and Moti investigate a crime organization that deals with trafficking women. When Alex joins the investigation undercover, against Arik's better judgement, the whole investigation becomes complex, undermines everyone's' relationships, and endangers Alex's life.
Arik needs to save Alex from the crime organization that has kidnapped her. He is determined to imprison Babayoff at all costs, and manages to find a witness against him, but Babayoff has a few more surprises up his sleeve.
Arik and Mori investigate a crime organization that deals in sports gambling. The investigation gets complicated when Moti finds a source, a boy who knows the business from up close. In the meantime, Danny Bababyoff's life changes in prison when he turns religious.
Arik brings Anatoli in for questioning under Babayoff's nose. He only has a few hours to break the Russian mobster and he will do anything to do so. On the way Arik burbs out Berkowitz, Lital, and his failing relationship with Alex.
A suicide bomber is approaching Tel Aviv on the way to a terrorist attack. Arik and Moti must stop him, despite the fact that they are busy with the Babayoff family investigation and it isn't clear if Anatoli is going to help them or is playing them. Lital gets entangled during a stakeout of a mysterious Mexican criminal.
Everyone's waiting for the huge drug deal that Babayoff is planning. Ezra is appointed to head the operation, and Arik is anxious that he will interrupt his plan and discover Alex's secrets, while Anatoliis worried that Babayoff knows about him. Everything will explode during one night.