The episode begins with the rookies prepping for an annual camping trip. Chris tells everyone he can't go because he has to spend time with his son, Christian. Chris suggests Chloe takes his place, but the idea is met with resistance, especially from Gail. Even Dove says she can't come.
In the next scene, Andy grimaces when she sees Sam with Marlo as her and the girls pull into the station.
15 Division is assigned to setting up check points, and solving a shooting case, led by Sam. A young high school student was shot and killed the night before. The only lead is a car with unknown license plates. On the way out of the meeting Andy runs into Sam and is incredibly awkward until Gail and Traci save her.
At a check point, a young man flees from Gail and McNally , and the two find his car abandoned, with a boy in the trunk. As Andy and Gail are driving the boy, Alex, to the station, he gets a nose bleed and they take him to a hospital. While waiting, Alex tells Andy he has a girlfriend, but it's complicated, and says "If you find someone you love, it should be forever." Of course this speaks personally to Andy.
Meanwhile, Dove is working with Marlo, whom has returned to work just two weeks after shooting a mentally unstable woman, Wanda. As someone who's been through a similar experience, Dove calls Marlo out for not being ready to return; he knows she hasn't been sleeping or eating well. Marlo angrily shrugs him off.
Cut to Shaw and Chris at their check point. As they discuss relationship problems, a car matching the one from the shooting pulls up, and they arrest the driver.
At the hospital, the nurse informs Gail and Andy of the secret Alex threw a fit to try and keep: Alex is actually a girl. He tells Detective Nash that his parents have just kicked him out of the house for his behavior, and that he'd visited the girl he'd told Andy about, Dawn, but when Dawn's brother saw them together, he flipped out. Presumably, he's the driver of the car Alex was found in.
Back at the station, the cops learn the name of the shooting suspect: Cesar Medina. He has a rap sheet which includes affiliation with a rough gang, Los Viveras. The forensic report on the car states that no gun was found, but there was evidence of gunshot trauma. Sam recounts that they found four casings at the scene, to which Oliver replies "one in the kid, three in the car. He took fire, but he never shot back." Sam goes in to interrogate Cesar, who tells Sam that the victim, Ricardo Sanchez, is his baby cousin, but refuses to name the shooters. Sam suspects Cesar wants to go after them himself. Cesar's file says he left the gang life and has been clean since moving to Montreal two years ago. Oliver finds out that about four years ago, Los Viveras had a club fight-turned-turf dispute with another gang, the Jamison boys, which Cesar and a Jamison guy named Shay Bishop were in the middle of.
As the two are searching for a more recent connection between Shay and Cesar, Chloe asks Nick for scoop on Dove. Nick, somewhat downheartedly, replies that he isn't really close to Dove or the other rookies, since he didn't come up with them from the start. Then Chloe asks him what his favorite memory is from his time undercover with Andy. He replies fondly: "It's just small things, really," d launches enthusiastically into a story about a game they played to help stay awake while tracking two guys. He's embarrassed when Chloe says she meant memories about the actual police work.
FINALLY, an undeniable sign that Nick really is into Andy. Thank you, Chloe.
Meanwhile, Andy and Gail arrive at Dawn's house. Dawn says that when Teddy, her brother, saw her and Alex together, he threw Alex against the wall and dragged him out to the car. Teddy is arrested for assault and kidnapping.
Cut to Chris and Oliver. As they approach Shay Bishop's apartment, Chris tells Oliver he's trying to make it work with Christian's mom Denise, but it's not going well. Oliver says he should keep trying, and if it doesn't work, at least he tried everything. When they tell Shay about the shooting, Shay says he was in lockup at the time, but then implies that it is Cesar's own former guys, Los Viveras, who were after him.
In the interrogation room Cesar tells Sam he paid his way out of the gang, and that he came back to town to surprise Ricardo (Richie). He still refuses to give up names. However, Nick and Chloe find Richie's text message records. Just before the shooting, Richie sent one saying "he's back." Then "heading to skate park." He received one: "ready for you, get him here." Sam reads them to Cesar, who refuses to believe his cousin would set him up, but acknowledges that Richie knew he was coming back and that it was his idea to go to the skate park. Devastated, Cesar insists Richie wouldn't do that, that he's a great kid, to which Sam prompts him to realize that Richie probably set him up as his initiation into the gang. Finally, Cesar gives up the shooters.
In the meantime, Alex has disappeared from the hospital and calls Dawn to say goodbye. He Facetimes Dawn's phone, saying he's sorry for everything, then hangs up. Based on the background of the video, Traci thinks he's at the Silver Beach Motel. The two find Alex in a room passed out with his wrist cut, blood all over the carpet. He survives and Andy is shown by his bedside in a hospital. In a heartwarming scene, Andy urges him to go on-- says that he is kind, smart, brave, and the world is better with him in it.
In the next scene, Marlo admits to Dove that Wanda died, and she is having trouble coping. He offers her advice. Then, after hearing Dove pressure Chris about camping, Oliver tells him to lay off, quoting Dove himself by saying that Chris is the guy that always does the right thing even if it sucks. Dove then decides to set up the campsite on the roof of his building so that Chris can participate.
In the closing moments, Nick shows up with Chloe. When Chloe asks Gail if they can be friends, Gail says she is desperate and pathetic. In response to Gail's brutal tirade, Chloe says Gail is a terrible person and Nick is such the complete opposite of her, that it's no wonder he's falling for Andy. This shocks and horrifies Gail who looks over at him, as he happens to be sitting and talking with none other than Andy, speak of the devil.
Will Gail confront Nick, and what will Nick say if she does? Perhaps we'll find out in next week's episode.