On HAPPY ENDINGS' upcoming episode, titled "The Storm Before the Calm," Penny insists that she's fine after her breakup with Pete, but the gang begin to wonder when she writes a play entitled "Black Plague: A Love Story" and asks Derrick (guest star Stephen Guarino) and his theater group to stage it. They brace for "drama" in more ways than one. Meanwhile a marketing group asks Alex and Max to be tastemakers, but is it a scam?, on FRIDAY, APRIL 12 (8:30-9:01 p.m., ET) on ABC.