Sue enters a contest to win a car; Mike and his brother bond on a road trip to Chicago for Brick's spelling bee; Frankie goes to Axl's dorm to help him find a missing desk.
Mitch and Cam’s big day is finally here and nothing can ruin it, until nothing turns into a whole lot of somethings and puts wedding planner extraordinaire Pepper Saltzman to the test. Meanwhile, Jay and Gloria host the Tuckers, Phil squeezes in an eye procedure before the festivities and Claire embraces her role as “best woman".
Jim stops drinking in solidarity with Steve and starts to suffer from panic attacks. Through a misunderstanding, Jim ends up at a married ex-girlfriend's house for a costume party.
Derek and the Broadhill gang go on a trip to London Zoo. It's Derek's best day ever, as he meets giraffes, penguins and aardvarks, while Vicky meets the man of her dreams.
United by their desire to take the Patriots down, Neville and Monroe form an uneasy alliance. As Rachel comes face-to-face with the nano-tech while searching for Aaron, things don't go according to plan for Miles, Charlie and Gene when they try to steal the Patriots' supply of mustard gas.
Teti and Lundin are in Norway. This is their final episode together.
As Antonio’s life is now in question, Voight and Platt open up about their pasts. Jin is caught while tinkering with Voight’s computer and uses the only scapegoat possible to keep him in the clear. At the same time with Charlie back in town Lindsay realizes she’s going to have to come clean about a few things. Halstead finally gets answers he’s been wanting about Voight’s and Olinsky’s past.
Noel Fitzpatrick sees a rabbit with a broken leg. Cocker spaniel Dixie needs spinal surgery. And Noel finds inspiration from X-Men for a daring solution to a dog's damaged paw.
Mel and Joe recall the years they have spent together as they try to convince a counselor that they have the perfect relationship.
Melanie uses an illness to get tickets to a sold-out concert. Meanwhile, Victoria becomes suspicious of an online acquaintance.
Last call induces panic among those who have not locked up someone to go home with. As Tom tries to finalize Maya, he finds himself drawn to Liv, while Liv is having second thoughts about Ron while seeing Tom in a new light. Meanwhile, Bruce strikes out with Jessica and is stuck looking for a fallback.
Carmen is concerned about her cousin Antwane's 3-year romance with a man named Tony. Antwane lives a virtually pre-digital age existence making Tony's true identity difficult to reveal. Is Tony really who he says he is?
Emma goes on a date with Maggie's divorce lawyer, and discovers a secret about her mother.
After an angel carries out a suicide attack on an ice cream shop to kill one angel from another faction. Sam and Dean investigate and discover that the target was one of Metatron's angels and that Castiel may be responsible.
Hayley atempts to save her unborn baby from the witches. Francesca meets with Oliver and Jackson to decide the future of the werewolves in New Orleans.
A fire at a boarding school leaves Lt. Severide shaken and wondering if he could have done more. Meanwhile, with the firehouse in full support of Dawson as she retakes the fireman’s exam, Lt. Casey attempts some political maneuverings on her behalf. Elsewhere, Mills looks for answers about his father’s mysterious past and Chief Boden’s grand plans take a detour.
Tommy brutally takes control of a situation when PC Kirsten McAskill pulls him and Lewis over. His actions have devastating consequences.
Dark secrets are revealed as Coulson and his team put everything on the line to stop Garrett and the forces of HYDRA.
The team takes desperate action in its race to prevent the malevolent AI program Samaritan from coming online and making them its first targets. Meanwhile, the months-long battle with the anti-surveillance terrorist group Vigilance comes to a shocking conclusion.