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While Khaled, the intelligence officer, handles a national security case, the 101 Battalion, led by Major Nour, raids a terrorist's farm, who respond by detonating Karm al-Qawadis checkpoint.

Many are martyred, and Nour saves the ambulance's movement from the terrorists' obstruction. Military Security rescues victims of human trafficking in a suspicious farm.

Military Security, with the help of Musa, locates Abu Ammar, the mastermind behind the checkpoint operation, and Nour arrests him. Salem bin Musa is martyred.

Terrorists recruit Dr. Waheed, who works in smuggling, to take advantage of his tunnels, as the organization plans to detonate a new checkpoint after they blew up the power station, and Khaled devises a plan to respond.

Waheed denies in front of Musa his cooperation with the terrorists but admits his hatred for his tribe and its sheikh. Nour and Khaled begin a plan to discover the tunnel through which the terrorists escape.

The army strikes the farm where Abu Hajar is located and kills many of the takfiris, but Abu Hajar survives. Abu Ammar reveals information about the organization's leaders in exchange for guaranteeing the safety of his son.

Nour dreams about Salem and the battalion control two farms that Khaled thought would be a place for the leaders of the organization to hide in. The doctor Amna reports a member of the organization called Eid, who is arrested by Nour.

The location of Abu Osama, who is responsible for the bombing of the Karm al-Qawadis ambush, is determined. The 101 Battalion raids the place, and Abu Osama is injured, but he escapes. Officer Islam is injured, and the injury leaves him unable to move.

Waheed rescues Abu Musa, who tries to join Waheed in the organization, and the organization attacks Sector 101 with a car bomb, killing many officers.

The army responds to terrorism by eliminating the perpetrators of the attack and restoring the rights of the martyrs, but Abu Osama convinces Waheed to join them and kill Musa with the help of Kamal.

The organization trains Waheed to become one of its leaders. The incident of slaughtering the Egyptians in Libya takes place at the hands of ISIS, so the men of the 101 Battalion attack some of the monitored elements and kill them.

Waheed goes to meet Abu Doaa, the head of the organization, and everyone agrees to kill those who cooperate with the army. The terrorists kill Maha in front of the people of Sinai so that they won't cooperate with the army again.

Disagreements within the organization increase after Hakim joins the organization without the consent of Abu Al-Baraa. Hakim convinces Abu Osama to get rid of Abu Al-Baraa, and Nour and Amna start to fall in love.

Hakim reveals to Khaled the location of Abu Al-Baraa to get rid of him. Khaled suspects Hakim, but the information is proven to be true, and the battalion eliminates Abu Al-Baraa and his followers.

The soldier Barakat is martyred to protect a child from gunfire during the battalion's raid on Abu Al-Baraa's farm. Hakim takes Abu Al-Baraa's place in the organization, and Nour confesses his love to Amna.

The takfiris attack the checkpoints of El Gorah, El Sidra, and El Rifai using booby-trapped vehicles in an attempt to declare control of Sheikh Zuweid.

The army responds by launching an air strike on the takfiris' locations in Sheikh Zuweid. The terrorists are terrified, and Officer Haroun blocks the takfiris' supplies.

Everyone worries after the recent epic of Sheikh Zuweid. The terrorists flee after the air strikes. Nour's mother is worried because she did not hear news from her son, then she discovers his injury.