Joanna is thrilled with Frederick's return, while Wendy remains suspicious of his behavior. Killian discovers he has a lot in common with new love Eva. Dash reluctantly deals with his blackmailer.
Oliver is thrown by the changes within Team Arrow. He's used to calling the shots but sees that the team has evolved in his absence and tensions quickly escalate in the lair. Oliver is furious that Laurel has been going out as the Black Canary and tells her to stop risking her life but when Vertigo (Peter Stormare) hits the streets again Laurel goes against Oliver's wishes and tracks down Vertigo who hits her with a full dose of the drug. Laurel's biggest fears revolve around her sister Sara (Caity Lotz) so the Vertigo causes her to hallucinate an epic fight between Canary and Black Canary. Meanwhile Chase surprises Thea; and Roy warns her to stay away from Malcolm.
While Megan and Kyle must deal with a secret that has emerged from Megan's past, Terence and DeAnn work together to deal with a possible threat to the Institute.
Kyle accompanies Megan on a trip to her hometown to officiate her best friend's wedding. Terence goes on a journey of self-reflection after a confrontation with Kyle, and Annika inspires DeAnn to take more risks with her life.
While on location for Technicolor Highway, Kyle and Megan clash over possible career choices that could impact their relationship. Meanwhile, Terence invites Shaun to start a new project for IHM.
