The Reagans weigh the rights and wrongs of vigilantism when a good Samaritan who has a police record takes action against a terrorizing subway criminal.
Hannah tries to hide mounting anxiety about her book from her visiting parents. Meanwhile, Marnie is stunned by news that Charlie has started a successful app company; Adam meets a boisterous woman in AA (Carol Kane) who coaxes him into a date with her daughter; and Ray's aversion to college parties gives Shoshanna pause.
Reese and Finch must protect Harper (guest star Annie Ilonzeh), a street-smart grifter, when her plan to steal cash from a medical marijuana dispensary goes up in smoke. How many enemies can one person make?
Betty has a hard time telling Daniel important news about her future; Amanda copes with the death of her dog; Marc wonders if he will ever have a successful relationship.
Betty asks Daniel to go to Hilda's wedding with her; Amanda wants to fix Marc up with her new client; Betty considers unexpected offers; Wilhemina uses Tyler as a pawn to fight the Meade empire.
