Professor William Nutt, a vegetarian, while lecturing on the evils of eating animal food, meets Mr. Hastings, an old schoolmate, who invites him home to dinner. It happens to be on a Monday, and Mrs. Hastings is obliged to do her own washing, the washerwoman having left in a huff. She is horrified when she sees her husband and the professor coming, and an accident happens which renders the little food she has left in the house unfit to eat. Not wanting to disappoint the professor at not having a good meal, the wife advises her husband of the accident and both, unknown to the professor, hurry from neighbor to neighbor getting eatables. They succeed in obtaining quite a nice menu, consisting of roast chicken, etc., but when the professor is escorted to the table he refuses everything and takes from his pockets his meal, which consists of six peanuts, three walnuts, four prunes and a raw carrot. Husband and wife look at each other, unable to know whether they should swear or laugh.