Broadway diva Madison Banks is shocked to find the son she gave up for adoption at her door. Unsure how to fit him into her life, she pushes him away until realizing he may be just what she needs.

Unnerved by the saintly specter of Arlo's adoptive mom and the barbs of her understudy Maddie struggles to adapt to her new life as a mom. Meanwhile, Arlo wonders if they'll ever have a real relationship.

After hearing Arlo's karaoke talent at his birthday party, Maddie is thrilled to find a connection with him and decides to make him a star. Against his wishes, she pulls some strings to try to set him up with a record producer.

Hoping to lift Arlo's spirits, Maddie, Thelma and Frank decide to finally celebrate Christmas for once. Buoyed by the sudden holiday cheer, Arlo surprises Maddie with an unwelcome gift: her estranged mother.

When Kathy Griffin visits the building to look at the penthouse across the hall, a threatened Maddie struggles to contain her insecurities and goes to great lengths to restake her claim as the biggest star in the building.

After firing inept but hunky stagehand Mickey, Maddie consoles him with a one-night stand - then can't get rid of him. Tension arises between Frank and Arlo when Frank asks Arlo's crush to be his tango partner.

News that Arlo's a virgin prompts Maddie to convince her understudy, Brittany, to deflower him in exchange for a chance to go onstage, but the plan backfires when Arlo falls in love and his mother must avenge his broken heart.

Maddie confronts a secret from her past when she has an encounter with the real Madison Banks, a former actor who had her career ruined by a selfish Maddie and now seeks revenge on her old nemesis by kidnapping Frank and demanding an audition to prove she has what it takes to be a star.

On the eve of the Tony nominations, Frank infuriates Maddie by admitting he doesn't think she'll get a Tony nod. Trying to remind a fuming Maddie just how lucky she is to have him in her life, Thelma recounts how they all met.

Thelma's womanizing ex comes to town, but Maddie goes to extremes to keep them apart when she fears it might mean losing her best friend and loyal assistant.

Maddie's mad at her agent and thinks about firing him when a costar is finding work, but she chickens out and seduces him instead. Meanwhile, Arlo, Frank and Thelma confront their fears after they're inspired by Maddie.

Hoping to help Arlo woo a girl, Maddie invites her snobby parents to a dinner party. Maddie casts herself as the perfect mom, but the plan goes sideways when Frank has to play her fake boyfriend and Thelma gets high.