Woman flight officer Fennington is on the final strait of her inauguration into Department S - a special division of the Air Force. To pass the final examination she must prove that her pain threshold is well above average. To achieve this Captain Graves subjects the girl to 40 hard caning strokes to prove her she is the right sort of candidate. Lots of hard caning action with the woman bent over a table in stockings taking her caning, also features a bonus scene of her in the shower afterwards trying to cool down her reddened ass with cold soapy water.