Jasmine throws an end-of-summer blowout and invites Fiona down to David's boat but neglects to inform her that Steve and Estefania will also be on board; Lip tries to get back into Karen's good graces and prepares a prenup for her and Jody. Meanwhile, the Ian and Lip impasse heats up into a physical confrontation; Frank tires of doing Grammy's bidding and wants her out, but Fiona is enjoying the old girl's company.