While checking out the library, Luz's pranks lead to unintended consequences.
As Blake and Alexis continue to vie for the loyalty of Fallon and Adam, Cristal finds herself resorting to drastic measures to carry out her plans. Liam contends with someone from his past while Dominique calls in a consequential favor from Culhane.
While Five-0 investigates a murder on a cargo ship where pirates impersonated the Coast Guard to board the boat, Adam finally gets the evidence he needs to take down the Island's Yakuza operation once and for all. Also, Quinn helps Noelani when she suspects that her uncle didn't die of natural causes.
Two sisters clean out their childhood home after the untimely death of their mother. The Guy delivers to a bickering couple renegotiating their relationship. And a new mother hosts her teenage cousin from out of town.
Bart accidentally sees a brand-new superhero movie a month before it comes out.. and the world cowers before his newfound plot-spoiling powers. Thus, a new super-villain is born: Spoiler Boy! Can heroic movie executives stop Bart before he succumbs to the temptations of ultimate evil? Find out.
Saul plans an announcement. Carrie gets a surprise.
After obscuring their true purpose in town from local police, Ralph and Yunis interview witnesses from the cave festival, while Holly and Andy visit the scene. Later, the group considers its next move as Claude deals with the weight of his role.
The group must defend Alexandria from a threatening outside force.
Stewie's future life could not be going any better, living as a wealthy, old Mr. Burns-type man, until his retirement is interrupted by Brian, who brings news that Peter is dying.
Deirdre deals with a medical issue while attending Jeff's Lifetime Achievement Award ceremony. Jeff tries to be anyone but himself. Seb meets someone old and someone new.
Judd enlists Ryan to help charm Harrison Aimes, an uber-wealthy passenger who has a strange effect on Judd. Meanwhile, the passengers become transfixed by a divine image circling the ship and Rav deals with the fallout when the ship's moral quandary hits the media.
Lucy returns to duty after her abduction and Harper steps in to help her through her first day back on patrol. Meanwhile, Nolan takes his son's fiancé, Abigail, on a ride along after showing interest in becoming a police officer.
Jeff decides to start a new Pickles family while Deirdre tries to get some good PR for the show.
Owen, Michelle and the 126 crew race to a rattlesnake infestation at a young family's home, and attempt to rescue a man with dementia from a dangerous scene that he created. Meanwhile, Owen adopts a firehouse dog with cancer and Michelle finally learns the truth behind her sister's disappearance. Also, a tragic accident shakes the team to its core.
Kim's confidence is tested when she's faced with a legal problem only she can solve.
After learning that Gravedigger and the Markovians are coming to attack Freeland, the Pierce family prepares for war.
In the wake of a devastating tragedy, Ben tries to connect with a despondent Olive. Michaela questions Jared's loyalties, and Saanvi shares a medical breakthrough that could change the course of all their lives.
When Nadine's father comes to town for her birthday, Devon enlists the help of the whole staff, as well as one of his patients, to ensure that he makes the best first impression. Red Rock decides to cut the entire OBGYN department and Logan Kim leaves Conrad with the difficult task of letting the residents go. Meanwhile, Nic cares for a teenage patient whose condition is deteriorating.
The Lyons' world is turned upside down as they face a loss, which forces one Lyon to deal with an unresolved trauma from the past. Meanwhile, Andre makes an important decision about his health, family and career and Devon confronts Tiana about her relationship with Hakeem. Also, a shocking revelation about the future of the Lyons is revealed.
Hynek and Quinn head to a Utah ranch to investigate a young family's claims of unexplainable and dangerous phenomena.
A convicted murderer's escape hits close to home when several members of the team find themselves in danger. Dr. Charles and Dr. Halstead continue to clash over patient treatment plans. Dr. Choi and April discover the truth about a patient's scam. Maggie finally receives some good news.
Following a mission failure, Bravo Team conducts a high-stakes After Action Review to identify who's responsible for a possible career-ending mistake.
With time running out before Carson's evidentiary hearing, Nancy turns to supernatural sources in a last-ditch effort to find clues to exonerate her father.
Boden is on edge after starting a new fad diet. Casey and Severide disagree on a call. Brett's birth mother shares life-altering news. A familiar face has a proposition for Herrmann.
Penny only wears vintage. Alice rejects a sandwich. Julia does a thing.
The SWAT team searches for a link between the seemingly unconnected victims of a lone gunman targeting women. Also, Luca assists with a homicide investigation in his neighborhood; Lieutenant Lynch pushes Chris to do a news interview; and Hondo reaches a juncture in his relationship with Nichelle.
An armed robbery case quickly turns into a homicide investigation. When one suspect's background suggests domestic violence, Upton is forced to reckon with her childhood. Voight and Halstead butt heads over Halstead's righteous instinct.
As Ben readies the new Physician Response Team truck for the field, his suspicions about Sullivan and the missing Fentanyl continue to grow. Meanwhile, Jack and Rigo try to look past their differences when they are forced to work together and fight a mysterious gas station fire; Dean and JJ try to work through their differing parenting styles; and Travis meets someone new.
When Mandy worries about Kyle passing his first college exam, she secretly enlists Vanessa, Jen and Ryan to help tutor him. Meanwhile, Mike learns of Ed and Chuck's superstition involving their decision-making.
Dr. Sturgis is furious when Sheldon accuses him of plagiarism. Also, Mary sets out to find a "girl trophy" for Missy's end-of-season baseball ceremony, and Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.
Jake and Amy work an uncrackable case while Holt adjusts to a new beat. Hitchcock looks for the love of his life.
Ambrose urges the NYPD to investigate Jamie for a new crime; Jamie struggles to salvage his life.
When one of Charlie's mentees from the local library gets mixed up with a gang, Charlie ropes in the whole team to help save her life. As Bill's term draws to an end, other players continue to enter the race for power. Meanwhile, Cade and Teresa are struggling to deal with an unforeseen situation with their foster children.
Bonnie suspects that Adam's sponsor has an ulterior motive. And Christy is caught in the middle when Tammy plays hard to get with Chef Rudy.
Sam picks up the girls from a trip. the second half hour, Sam embraces her state of being.
After their escape, Anakin Skywalker and the clones defend a local village