At the insistence of her mother, Caryn travels to Florida totell her grandmother the truth about having broken off herwedding engagement. Once there, she cannot bring herself to doit and comes up with another plan. Meanwhile, to help Ericcope with losing his father, Zara pretends to communicate withhim from beyond the grave.
Reese and Finch scramble to protect a software CEO when hisbehavior becomes increasingly erratic following a hacker attackthat reveals all his secrets and unravels his life.
Fawn takes Jess to a charity golf tournament, but the VicePrincipal lands in the sand trap in her attempts to make a goodimpression. Meanwhile, Winston meets a beautiful woman andmust lie about being a cop.
While conducting an autopsy on a Petty Officer who is believedto have died from natural causes, an armed man enters themorgue and holds Wade, Sebastian and Danny hostage.
DiNozzo is partnered with his girlfriend ATF Special Agent ZoéKeates after evidence reveals that the murder weapon in an NCIScase was originally purchased for the controversial ATF stingoperation "Operation Fast and Furious". Also,Anthony DiNozzo Sr. returns to town for a special dinner tomeet his son's girlfriend.
As Robert Gonzalez makes his move, Coulson must do whatever ittakes to protect the future of S.H.I.E.L.D. Meanwhile Skye'sjourney to control her powers takes a surprising turn when shemeets the enigmatic Inhuman named Lincoln.
When Clive identifies a John Doe in the morgue as one of hisformer criminal contacts from his days on the vice squad, Livis surprised that Clive is so quick to refuse her help insolving the murder. Liv and Ravi investigate on their own whichputs them in a precarious situation. Liv's problems continue tomount when Major begins searching for a roommate and shebelieves he's considering a cute co-ed.
Felicity and Ray Palmer pay a visit to S.T.A.R. Labs for helpgetting Ray's ATOM suit to work, and ask Cisco for help.Meanwhile, a young tech expert raises havoc with her insectdrones, and Barry asks Ray for help dealing with her.
It's all hands on deck when Firehouse 51 races to the scene ofa deadly chemical leak inside an industrial building. Withsquad and truck tested like never before, scores of workersare rescued but many are experiencing respiratory distress.This prompts truck 81, squad 3 and ambulance 61 to spring intoaction to transport the victims to nearby Chicago Med. Thesituation takes a turn from bad to worse in the midst of thechaos when a "patient" planted inside the hospitalgoes on a suicide mission armed with a grenade and claiming tobe the carrier of a deadly airborne disease. Trying to stop themadman from engaging the explosive device, a member of thefirehouse team is severely wounded in the blast and left toface life-threatening injuries. With no other choice, ChicagoMed is forced into lockdown until doctors and the Hazmat teamcan determine the severity of the airborne virus.