Atwater, Ruzek and Burgess are on foot patrol at a street fair. Burgess chats with someone she knows from the district named Frank Toma (Ben Youcef). Her and Ruzek chat about her new man when Atwater sees something. A van in a restricted area. He sees two guys get out and run. He and Ruzek chase while Burgess and Toma try to clear the area. One of the guys gets hit by a car before the van blows up.
Voight and FBI are working joint and they call it terrorism. Voight tells the unit where to canvas. Burgess suggests bringing Toma to translate. She and Antonio ask Platt to assign him but they haven’t heard from him. She tells them where to look and suggests asking his partner.
Halstead and Upton go to Med to talk to the suspect that was hit by a car. April won’t let them in though. Antonio and Burgess track down Toma’s partner. No word from him. They go to see his folks. No word there either but they look around his room and find something. Evidence he might have been involved with the bombing. Burgess is upset.
Burgess tells Voight what she knows. He tells her to take the blinders off and go question the parents. Back at the unit, Voight tells Ruzek to look through Toma’s computer. He updates the FBI agent who admits Toma has been on their radar. Voight says that he’s still one of theirs.
Antonio is going through Toma’s room. Burgess comes in. She still convinced that he is innocent. Antonio finds photos of Toma with another officer from the district. They go to find him. Halstead and Upton question the suspect. They get him to name a few people and report back.
Atwater got a lead on the other guy from the van and his wife. They move in. FBI guy and Halstead corner the wife while Upton and Voight chase the guy. The wife pulls a gun so Halstead shoots her. She doesn’t make it. They get the guy though. Voight sends Halstead and Upton in to question him.
Burgess and Antonio are still trying to track down the boyfriend. Halstead and Upton make some headway. They find out there is a second bomb and that he was working for a terrorist high up the ladder. FBI doesn’t buy it but Atwater says forensics matches.
FBI updates on the terrorist leader. Burgess finds out that the boyfriend is about to land at O’Hare. She and Antonio go to meet him. They talk to him and find out that he got a voicemail from Toma. It sounded like a goodbye. He also tells them that Toma’s partner, son of a commander, has been getting grief for being Muslim and being gay.
The unit tracks down Toma’s car but he’s not in it. After a foot search, Burgess finds him. He tells her that it’s too late, he messed up and there is a letter in his backpack explaining it. He wants her to be the one to tell his parents. Then he takes his own life.
Everyone else shows up and Burgess rants. Voight benches her. Back at the unit they sort through Toma’s things but don’t find a letter. They find more info on his computer but it will take a while to sort through. Antonio and Burgess go to an apartment Toma told Burgess about. It looks like he was running his own solo undercover op. They call in and update the unit.
There is information there that might lead to the second bomb. They raid a warehouse and find one guy. He tells them it’s too late though. The bomb has already been moved. Ruzek finds a chat room talking about the academy graduation at Navy Pier. Voight thinks it’s a false lead. He tells Burgess to look through the notebook. She and Antonio find information about a high school football game and head that way.
They get stuck in traffic but see the van. They move in on foot. They get the guys and stop the bombing. Afterward Burgess tells Voight that she wishes she could have saved Toma. He saved a lot of people.
Burgess goes to see Toma’s parents. She tells them that no matter what they hear, their son was a here. Then she goes to see his partner and tells him that his time will come and she will be waiting. She gets called to Voight’s office. He tells her that she needs to stay away from the partner. Her career will go up in smoke otherwise.
Voight wants the higher ups to clear Toma’s name for the sake of his family. The investigator comments that Voight knows when to fight and when to run. Voight says he doesn’t run. He waits.
I liked seeing Burgess actually take control for once. I’m also glad that Antonio had her back. Halstead is just killing all the people these days. I don’t like that he’s so trigger happy. I feel like Voight is building up for some big showdown with the investigator guy. I’m interested in that.