Sara reads in a newspaper that there is a ferocious killer fish that is wandering about the city, ready to eat little fish in fish tanks. The family becomes suspicious of Palla, the newly arrived fish, but fortunately the TV news says the story is false.

Palla teaches Pippo how to make little farts and explains that they can be smelled outside the aquarium. Chris gets blamed for them, but he's playing his video game and is oblivious to everything.

Each member of the family passes along the task of feeding Pippo and Palla, and sure enough everyone forgets. How are they gonna do it?

Sara wants to eat the fridge because of boyfriend trouble and Palla has a ringing stomach.

Chris doesn't want to talk about his flunked math test, only about his date with Margherita at the pizzeria. Chris's infatuation makes Palla remember his own love affair with Sardy. Pizza Margherita is named after an Italian queen, who loved her pizza with just tomato sauce and mozzarella.

The two kids want to go on strike because their father won't raise their allowance. But they are having a hard time finding something to strike over, and decide to take advice from the fish in the acquarium.

A cartoon in which two aquarium fish worry about the kids of the house who are going on a school trip.

Summer heat brings on unnerved parents, a power failure, chaos, and amused fish.

The parents are arguing and Palla worries that it will end in divorce, and this could mean being flushed down the toilet. Luckily, the parents patch things up.

Somehow Pippo and Palla get kidnapped and they begin to worry about ending up in a can!