Frank stops drinking (for $3000), which pleases Carl and Debbie, but Lip doesn't believe Frank is capable of two sober weeks. Ian continues his relationship with Mickey. Fiona scrambles to find a better paying job, while Steve's past starts catching up with him. Lip tours the University of Chicago campus and is offered an interesting opportunity. Veronica and Kev's foster daughter is a little different than expected, having come from a Mormon polygamous sect.