4. A Beautiful Mess

A woman named Lucy arrives at the Gallagher house with a baby, wanting to talk to Fiona. When Fiona meets her, Lucy slaps her and chases her through the neighborhood, revealing she is Craig's wife. She is forced to flee to Sheila's house, where she reprimands Craig through a phone message.

Debbie is overwhelmed with daycare business, and the stress manifests itself into an intense rash. Worrying that she's putting too much stress on the kids, Fiona forces Debbie to throw a slumber party for fun. Debbie develops a crush on Carl's friend, Little Hank, and invites him. She also decides to invite Holly, a 14-year-old still stuck in fourth grade, who only agrees to attend because of Lip. Ethel bonds with Malik, a teenage father on Kevin's youth basketball team. While Kevin is fine with her decision, Veronica fears for her safety. Frank is scared by Sheila progressing in curing her agoraphobia. When she reveals she wants to visit the Alibi, Frank realizes his days might be numbered.

Lip has sex with Mandy, and upon realizing she will sleep with anyone, gets her to try to seduce Jody. Debbie's slumber party proves to be underwhelming, as Little Hank rejects her advances, preferring to flirt with Holly. At night, Holly tries to sleep with Lip, who refuses her advances. Angry, she storms out of the party, prompting others to leave as well, devastating Debbie. This is witnessed by Fiona, who was arriving from a date with Adam. The following morning, Craig and Lucy arrive at the Gallagher house, where Craig apologizes to Fiona for her actions, causing her to isolate herself in the bathroom and cry.

Later, Karen arrives and attacks Lip for trying to ruin her relationship with Jody. As she leaves, she reveals she is pregnant in front of the Gallaghers. As Sheila prepares to walk to the Alibi, an airplane's wheel crashes right in front of her. This causes her to panic and return home, to Frank's delight.