Hank temporarily returns to The Hamptons to attend a ceremony for Divya and her new baby, and helps a musician who may have a grave illness. Meanwhile, a mysterious young woman has also crashed the party.
An old flame visits Hank while seeking medical advice, Divya bonds with a patient trying to get pregnant, Emma is invited to an upscale birthday party, Jeremiah has a date with Viviana, and Paige wants to confront Russell about the rug.
The team sees two new clients as Hank Lab opens, Cinco hurts Emma's feelings, Evan discovers that he is an "old fart," Hank helps Charlotte get ready for her procedure, and Divya unnecessarily meddles in Jeremiah's relationship.
Divya and Sachi go with Hank and Boris to Argentina to visit Sachi's grandmother. Evan is angry over a compromising photo of Hank. Jeremiah tries to patch things up with Viviana. Paige helps Ray decorate and helps Russell make amends.
Hank and Evan search for Emma, while Divya must fight to keep Sashi. Paige discovers shocking news about her therapist, Jeremiah decides to make a few changes, and Boris has new concerns about his condition.