what is the main storyline of this episode?
Anya closes a restaurant where four men have finished a post-badminton meal.
The Bill (Inside No. 9)
Anya closes a restaurant where four men—northerners Archie, Malcolm, and Kevin are entertaining Londoner Craig—have finished a post-badminton meal. After a misunderstanding between Craig and the thickly accented Anya, Malcolm takes the bill, but he and Archie both wish to pay. Craig insists that "he" will pay, as he is leaving, and wealthier than the others. 
what is "the bill (inside no.9) ? "The Bill" is the second episode of the third series of the British dark comedy anthology television programme "Inside No. 9". who directed it? Guillem Morales.
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The Bill (Inside No. 9) [SEP] Plot
Anya closes a restaurant where four men—northerners Archie, Malcolm, and Kevin are entertaining Londoner Craig—have finished a post-badminton meal. After a misunderstanding between Craig and the thickly accented Anya, Malcolm takes the bill, but he and Archie both wish to pay. Craig insists that "he" will pay, as he is leaving, and wealthier than the others. The three argue, Archie being unable to pay as the card machine lacks paper. Malcolm suggests that the bill should be split three ways, the northerners treating Craig, but Kevin claims to be the poorest. Archie, Malcolm, and Craig thrust cards at Anya until Kevin offers to pay.