You Rang M'Lord?

S1, E1: During the First World War Alf Stokes and James Twelvetrees, two private soldiers, save the life of officer Teddy Meldrum. He is eternally grateful. In 1927 James is working as the footman in the house of Lord George, Teddy's older brother, and hopes to fill the vacancy created by the recently-departed butler. After getting the sack from the music hall, Alf Stokes and his daughter Ivy enter service below stairs at the Meldrum house - but Alf is shocked to see a familiar face.