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

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

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

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

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

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

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

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

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

Frank wakes up after a month-long coma to find no one missed him. Worried she isn't a good mother, Debbie takes a criminal approach to making sure Franny grows up wealthy. Meanwhile, Lip successfully completes rehab and is determined to stay "sober;" Carl looks into surgery after learning he's the only uncircumcised brother; and Ian gets a bad feeling about Caleb's friend Denise.

Ready to disown his family, Frank takes Liam under wing and starts a new life barricaded on the top floor of the Gallagher home. Fiona, meanwhile, adopts a new, relaxed attitude and starts running Patsy's Pies on her own terms. Debbie gets into trouble in the stroller business; Ian tries out heterosexuality; and Carl finds himself forced into abstinence.

Kevin, Veronica and Svetlana start a topless maid service. At the shelter, meanwhile, Frank makes new friends to replace his old family - leading them to a for-sale house converted into the Gallagher Home for the Homeless. Plus, Debbie's new lifestyle comes to an abrupt end; Carl gets a syphilis scare; Ian struggles with a breakup; and with Fiona on the run to clean up after her siblings, business at Patsy's hits the skids.

Frank worries that he and his new family will lose their Home for the Homeless shelter, so he plans a little goodwill for the neighborhood. Meanwhile, Fiona drums up business by throwing a speakeasy party at Patsy's Pies.

Fiona sees opportunity in a laundromat for sale and decides to invest. Frank revels in the good fortune of his scam, but the troops catch a whiff of foul play. Meanwhile, Kev and V discover a shocking secret about Svetlana's father.