Marshall, a sweet but bullied teenager, turns to Trevor to fix up his left-wing mom, Hallie, with his boxing instructor, Clint, the sperm donor who made Marshall's birth possible.

Claire's apartment is burglarized and she finds herself leaning on Trevor for support. Meanwhile, Trevor tries to match-up an ex-jewel thief with his parole officer.

Trevor is trying to convince Claire to make a Mardi Gras theme party for her singles group. At the same time Trevor wants to bring back together a couple of high-school sweethearts.

A dialect expert is enlisted by Claire to seek clues to Trevor's origins, and by Trevor to act as Henry Higgins.