An ordinary morning in a small town in Israel is shattered by unicorn mask-wearing assassins who kill four students and terrorize the local community.

Omer stumbles on a video that had been deleted from Black Space. Tom becomes agitated when he finds out about the video. Miri is rushed to the hospital.

Davidi is partnered with Morag, a younger investigator. Davidi breaks the rules but discovers the Black Space app and receives a chilling message.

Davidi and Morag find evidence at the burnt tree behind the high school and at one of the students' homes. Davidi's eye gets worse.

Davidi is taken off the investigation but Morag insists on consulting him. Everyone is freaked out about Tom. Omer turns to Davidi with information.

Detective Davidi is convinced the four arrested Palestinians are innocent and that the murderers are among the students. Tom makes a "safe" list.

A video is posted on Black Space explaining the massacre and making more threats. Davidi arrests two boys but their complicated stories offer no clues.

Davidi can't be in two places at once and abandons Miri in labor to rush to a party at the school, where he believes the killers will reveal all.