The story begins with Fluffy asleep in the living room in a cardboard box at night.
He awakes when he hears a noise to find Miss Owers in the house, leaving Michael's room.
Michael suggests eating frogs legs instead, which upsets Fluffy and he decides he hates France.
One of the people they meet on the train is a young girl called Sylvia who tells Fluffy 'I love you rabbit!'.
Michael has some strange dreams on the train, one of which involves Sylvia eating Fluffy.
He frantically searches around and goes to Sylvia's cabin where he finds her about to bite into what looks like Fluffy but turns out to be a kipferl.
Michael's mother - Alice, father - Joe, sister - Rosetta, and brother-in-law - Fabrizio are all eating steak together.
The next day Fluffy's grandparents take him to Santa Maria La Scala for a picnic.
Fluffy likes his ice cream because of the jam sauce on it, which he mistakes for ketchup.
Part 4 opens with Fluffy playing underneath the table whilst Alice is shouting that she is convinced that the Mafia has got Fabrizio.
It is at this point that Miss Owers realises that she feels horrible when she is with Michael and decides that it is best that she just left anyway.
On the way Fluffy finds a tractor that was left on the floor, and as this is happening Michael is on the phone to his mother who is telling him that Fabrizio was mugged by some youths on mopeds.
Joe and Alice spend quality time together, and they receive a letter from David, telling them that they have a grandson.