The story begins by introducing George, Harris, Jerome and Montmorency, a fox terrier. The men are spending an evening in J.'s room, smoking and discussing illnesses they fancy they suffer from. They conclude they are all suffering from 'overwork' and need a holiday. A stay in the country and a sea trip are both considered, then rejected after J. describes the bad experiences had by his brother-in-law and a friend on sea trips. The three decide on a boating holiday up the River Thames, from Kingston upon Thames to Oxford, during which they will camp, notwithstanding Jerome's anecdotes about previous experiences with tents and camping stoves. They set off the following Saturday. George must go to work that morning ("George goes to sleep at a bank from ten to four each day, except Saturdays, when they wake him up and put him outside at two"), so J. and Harris make their way to Kingston by train. They are unable to find the correct train at Waterloo Station (the station's confusing layout was a well-known theme of Victorian comedy) so they bribe a train driver to take his train to Kingston, where they collect the hired boat and start the journey. They meet George up-river at Weybridge. The remainder of the story describes their river journey and the incidents that occur. The book's original purpose as a guidebook is apparent as J., the narrator, describes passing landmarks and villages such as Hampton Court Palace, Hampton Church, Monkey Island, Magna Carta Island and Marlow, and muses on historical associations of these places. However, he frequently digresses into humorous anecdotes that range from the unreliability of barometers for weather forecasting to the difficulties encountered when learning to play the Scottish bagpipe. The most frequent topics of J's anecdotes are river pastimes such as fishing and boating and the difficulties they presented to those who were inexperienced and unwary and to the three men on previous boating trips. The book includes classic comedy set-pieces, such as the story of two drunken men who slide into the same bed in the dark, the plaster of paris trout in chapter 17 and the "Irish stew" in chapter 14 – made by mixing most of the leftovers in the party's food hamper: I forget the other ingredients, but I know nothing was wasted; and I remember that, towards the end, Montmorency, who had evinced great interest in the proceedings throughout, strolled away with an earnest and thoughtful air, reappearing, a few minutes afterwards, with a dead water-rat in his mouth, which he evidently wished to present as his contribution to the dinner; whether in a sarcastic spirit, or with a genuine desire to assist, I cannot say. —Chapter XIV
1) Have you read the letter from Aunt Emily yet? — Yes, I have. She wants to visit us. She will come next Wednesday. 2) Why are you looking at that woman so attentively? Do you know her? — It seems to me I have already met her somewhere. 3) Is Jane in the office? Yes, she has been typing some documents since 9 o’clock. 4) The police inspector has been investigating this robbery for a week now. He has talked to all the witnesses already but he hasn't found the robbers yet. 5) I don't know how long Henry has been working on that project, but he hasn't finished it yet. 6) The secretary usually comes to the office at 9 o’clock, but it is half past nine now and she hasn't arrived yet. 7) Is Den in his room now? What has he been doing there since morning? — He has been preparing for the research expedition. He has booked a plane ticket already and now he is packing his things. 8) Are you OK, Nigel? You look very pale.— l am just tired. Ihave been working on mj^ report all night. 9) Who has been training in the gym for half a day now? — Ben and Alex. They have been preparing for an international championship for eight months now. They train every day. 10) How long has Nelly been painting this picture? — She has been painting it for a month now. She wants to exhibit it in our gallery next month.