Plummy drops into the countryside and has the idea to build a nice home. In a short time he builds the walls, a roof and the windows and doors. Finally, he makes the furniture. Plif and Plops who drop in too, really like the house and with one trick they succeed in getting into the house and locking themselves in. Of course, it all goes wrong and after some turbulent problems they find out that they would have achieved more by being friendly to one another. That way they all get a nice house for the three of them.