Part 1 of 2. The premiere of the fantasy drama, which is set thousands of years after the fall of humankind, finds Four Lands threatened by a grave danger.
Laurel faces her greatest fear when Vertigo drugs her with the vertigo drug. Meanwhile, Oliver deals with the team's changes in his absence, and Chase makes his move against Thea.
Brick abducts three city alderman and demands that the mayor remove the police from the Glades. With Oliver gone, Arsenal and Diggle are all that stands between the crime lord and control of the district. However, Laurel insists on helping them, carrying on her sister's legacy as Black Canary. In the past, Maseo reveals to Oliver that he will do anything to save his family.moreless
Arrow gets a stalker when a woman he once rescued decides to start killing criminals in the hopes that the two of them can be together. Meanwhile, Thea gets a new DJ and Ray invites Felicity out to dinner. In the past, Oliver helps Tatsu when Maseo goes missing.moreless
It's Valentine's Day at last and Carrie is excited. But Sebastien has a new job and unfortunately has to cancel. Predictably, Carrie is annoyed. So she goes out with the others. While at a hip bar that Samantha works at, Walt and Bennet learn something that could alter their relationship, if not life forever.
Meanwhile, Tom uses some of the skills that he's learned as a father to persuade Dorrit to date a boy he approves of.moreless
Bay discovers the secret that Emmett has been hiding. Prom has finally arrived.
Bay and Daphne team up on Emmetts birthday present. Meanwhile Emmett regrets what he did with Simone.
John and Kathryn meet with Angelo's lawyers, who claims that Regina switched the babies on purpose.
Reginas art work goes up in the gallery. Emmett is having trouble with speech therapy. Bay confides in Melody about Emmett dropping out of school.
Angelo attends a Dinner held by the Kennish's. Meanwhile, Wilke has some news for Daphne, a woman with a possible history with John shows up. And Emmett moves in with his Dad.
Emmetts mom insits that Emmett sells his motorcycle to help pay they $5000 fine he got. Both Bay and Daphne try to help.
As Daphne gets to know her new friend Simone, Toby and Wilke enbark on a new money making scheme in the form of Fake ID's. Meanhwile, Bay attempts to win over Melody to no avail.moreless
Kathryn thinks she found a nurse who knew about the switch. Bay crashes the festival the boys are playing at because she heard Daphne was there. Simone Flirts with Toby.
In the summer finale Bay gets a surprise when her biological father Angelo turns up wanting to get to know both her and Daphne, which doesn't go down well with the Kennish's.
As Bay and Emmett's relationship continues to get more serious she become conscious about his apparent love for Daphne. Meanwhile, Daphne is upset with Regina after learning the truth.
Bay and Emmett continue to bond in the hunt for Bay's biological father. Daphne learns of a life changing secret that Regina has been keeping from her.
Daphne struggles to fit in at her new school as she becomes the subject of gossip at Buckner Hall after an incident in cooking class. Elsewhere, Bay and Emmett grow close while doing some research into her father together.moreless
After learning that Bay has secretly been seeing Ty both John and Kathryn insist on having him over for dinner. Knowing that they're going to use the dinner to interrogate him, Bay tries to prepare, but she's nowhere near prepared for the secret Ty reveals.moreless
Kathryn host the annual benefit for the school at the house and soon the newly mixed family become the subject of Mission Hills gossip. Bay becomes finds it hard to accept that Daphne has started hanging around with Liam.moreless