Four hilarious stories, in which Horrid Henry hits on a brilliant way to write thank you letters, negotiates over vegetables, competes with Perfect Peter over which of them is sickest, and finds himself wearing the wrong underpants, with dreadful consequences.

Horrid Henry makes terms for eating his vegetables, has to wear the underpants his Great-Aunt Pamela--who forgets he is a boy--gave him, argues with his brother over who is sicker, and comes up with a new way of writing thank-you letters.