It's wedding day and Frank shows up uninvited - and high.

A confrontation between Sean and Frank quickly descends into a brawl.

Ian and Caleb get serious. Lip appears before a disciplinary committee.

Fiona tries to make amends with Sean. Debbie and Queenie trek to a commune.

Frank teaches Debbie how to work the system. Kev and Veronica visit Yanis.

Fiona confronts Patrick. Ian makes a discovery at the firehouse.

Frank's newfound appreciation freaks the Gallaghers out.

Frank helps Erica as Debbie ups her game. Lip tries to protect Helene.

Sean catches Will with one of Carl's guns and Fiona bears the brunt.

Sean moves into the Gallagher house as Fiona plans a traditional wedding.

Debbie carries a bag of flour around - determined to prove Fiona wrong.

Carl remakes the Gallagher home as his "crib." Debbie gets let go.