This story covers the final term of the Maynard triplets school-life commencing where ALTHEA JOINS THE CHALET SCHOOL finishes, after Half Term excursions.
The Prefects gather on the last day of Half Term to finalise details of the Sale, but are interrupted by Jocelyn Marvell, Althea Glenyon and Erica Standish. They have an idea for the Regatta (to be held for the first time since St. Brivael's) this term. The Prefects are very squashing about their proposal, and leave Jocelyn fuming. Jocelyn continues to try to find supporters for her idea but is firmly put in her place when the Head puts paid to it after Abendsen one day.
The Fourths have an adventure of sorts when they visit the Auberge and picnic further along by the stream under the pines. A thunderstorm arrives without much warning, and during the scramble to safety, Len is slightly injured.
The Regatta is cancelled when much of the school and the Platz area become infected with a mysterious disease. Public exams are this term, along with school exams. Some members of the Fourths decide to have a Midnight feast outside on the night prior to the exams, but this doesn't come off.
Preparations for the Sale continue after the Exams, including making dresses and confectionery, and rehearsing songs and dances. In the middle of the night prior to the Sale, the school is disturbed by gang of youths intent on kidnapping a millionaire's dying child from the San. Mary-Lou arrives in the midst of this and spends the night at Freudesheim.
Tom Gay's usual offering of an old country inn arrives, and is later won by someone who hasn't won many prizes before this.
The last few days of term are heralded in with a severe storm and flood, and loss of power for a time at the school. Reg Entwistle goes missing during the storm whilst returning from a case, and Len discovers what he means to her. The term finishes with the members of the Sixths' discussing the term and saying farewell to the School.
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