Get ready to watch the tide turn, because the ’60s are beckoning the ’70s on Masters of Sex’s fourth season, and you can watch the premiere right now. Scheduled to air September 11, the first episode of Masters of Sex’s upcoming run has been released in full on the show’s Facebook page, allowing even non-Showtime subscribers to get in on Michael Sheen, Lizzy Caplan, and a whole lot of yearning looks. This year, Masters of Sex is all about revolution, sexual and otherwise, which apparently means some changes in the dynamic between Masters (Sheen) and Johnson (Caplan). According to the synopsis, “Beginning the season at odds and burdened by lies, they slowly switch roles in both their work and the bedroom.†Watch a trailer for the full season below, and get an early jump on the groovy times, here.