POLICE LOG: A homeless vet is stabbed while trying to help an underage girl who was being roughed up at a warehouse party. The young woman who was attacked happens to be the daughter of one of 15's finest—Oliver Shaw. Detailed report follows:
A scream is heard as Andy and Sam shut down a party taking place at an abandoned building. A homeless man who had been squatting in the building has been stabbed. All partygoers are detained as potential material witnesses. Well, almost all of them are detained. One underage girl tries to bolt. When Andy and Sam grab her up, they see that it's Izzy Shaw—as in Oliver Shaw's 15-year-old daughter.
Oliver goes ballistic when he learns his now blue-haired little girl is part of a crime scene. Izzy also took some oxycodone. Oliver's wife. Zoe, says their daughter has been that way ever since he left. A bloody sweater is found in the purse of a young girl named Amber, who happens to be Izzy's BFF. Jerry gets nowhere when he goes hard at the girl. He needs help from Traci, who has been feeling like her supervisor has been enjoying the fact that he gets to boss her around.
Nick is paired with Chris for his first shift without a training officer. He learns that the stabbing victim from the warehouse is a military vet who got hurt trying to protect a young girl who happened to have bright blue hair. Oliver beelines it over to his house to learn that his daughter has disappeared. Back at the station, Traci learns from Amber that the bloody sweater belongs to Izzy, who has been hanging with a dangerous drug dealer named T.K. The search is now on for Izzy Shaw.