Clarke is still alone in the white room, frantically trying to make sense of her bizarre surroundings, while the fate of Bellamy, Finn and Raven is still unknown. Lincoln and Octavia’s daring plan is thwarted and an enemy returns. Meanwhile, Abby, Kane and the survivors of the Ark must face physical and moral dilemmas in their dangerous and beautiful new world. Finally, Jaha makes a heroic decision.
Phil is selling the house next door and he and Claire are excited by the prospect of having wonderful new neighbors, but that quickly turns into panic when a loud and obnoxious couple come to look at the house. Jay forbids Manny to see his new girlfriend when he realizes she’s the granddaughter of his biggest business rival. Mitch and Cam are determined to switch Lily out of Mrs. Plank’s class since she is known to rule with an iron fist – and she also scares them.
When Frankie finds a dining room set online for $50, she gives the family’s old table to Axl; Sue is angry when her boyfriend gives her a gift that he had also given to his ex-girlfriend.
Oliver decides it’s time for Thea to come back to Starling City, so he packs for Corto Maltese, where Felicity has traced Thea’s whereabouts. Lyla asks Diggle to go with Oliver because one of her field operatives, Mark Shaw, has gone dark in Corto Maltese and she’d like him to look into it. Feeling responsible for Thea’s departure, Roy joins Oliver and Diggle on their journey. Shaw double-crosses Diggle, putting numerous A.R.G.U.S. agents, including Lyla, at risk. Laurel meets Ted Grant, and Felicity adjusts to her new job.
Coulson’s team is up against the beautiful and deadly Bobbi Morse – Security Chief for Hydra. Skye’s father forces Raina to reunite him with his daughter at any cost.
As Barry and the team at S.T.A.R. Labs work to capture Kyle Nimbus, a.k.a. The Mist, a dangerous new meta-human with toxic gas powers, they revisit the painful night the particle accelerator exploded and killed Caitlin’s fiancé, Ronnie. Meanwhile, Joe decides to finally visit Henry in jail after all these years, but things take a dangerous turn when Kyle shows up looking to punish Joe for arresting him years ago. Meanwhile, Iris and Eddie continue to hide their relationship from Joe.
Eliza accepts Henry’s challenge to do something helpful over the weekend and reluctantly offers to babysit Charmonique’s young son on a Saturday night. Little does she know that young Kevin has a lot to teach her about having fun.
When an ice cream vender is shot, evidence leads Beckett and Castle to believe that an unknown second-grader may have vital information about the case. Castle goes undercover at an elementary school to try and identify the second-grader but nothing goes as planned.
Carrie gets a tip from Redmond regarding Quinn’s lead. Saul calls in a favor with an old friend in the Pakistani military. Fara uncovers a deep-rooted conspiracy.
When Dean and Alicia represent a former chief executive officer who is suing the company that fired her, they face off with Elsbeth Tascioni and Rayna Hecht. A hacker threatens Florrick/Agos/Lockhart by taking control of their files.