Arrangements are made for Nucky to attend a private club, where he makes a proposal to the Secretary of the Treasury, Andrew Mellon. Torrio, fresh from an Italian vacation, gives Al a larger role in business operations. Nelson, now indebted to O'Banion, is forced to work for him after hours, while at the same time facing problems in his day job. Nucky and Billie argue about the nature of their relationship. Margaret decides to take a stand on birth control and looks for a birthday pony with Owen's help. Gillian cuts ties with Luciano, giving Gyp a tip in the process. The result is an attempt on Nucky's life in which Billie is killed.