Henry Mouse has recently moved to a charming new residence in the fields. His Aunt Moppet disapproves but is happy to share his tea of toasted cheese amongst herself and her children. After she has gone a knock at the door reveals a bedraggled fairy with an injured wing. The soft-hearted Henry admits her and she moves in, though he is annoyed when she swaps his slippers for a diamond necklace when the Old-Clothes Robin comes to call. At his birthday party, however, to which all the mice in the neighbourhood are invited, the wall of his abode is broken down by an alarming weasel, intent upon eating all the partygoers. Henry appeals to the Fairy to do something to save them. Can she not remember her spells? Fortunately, she knows one, and she dances to fascinate the weasel and put him off guard so that the mice can bind him. After she has saved them, she flies back to Fairyland, and Henry is left to enjoy his home with his new companion, the field mouse Dinah.