Tonton Streaming Upstairs, Downstairs (1971) S1E3 - Board Wages

August 1904: Finding themselves alone and having the run of the house, the junior servants indulge in a night of wild partying. When James, the Bellamy's son, show up unexpectedly, the party takes an unusual turn, causing Sarah to reevaluate her life. Unhappy with what she sees, she makes a monumental decision that will alter her course forever.