Trumpee and Snaree, returning from school, find a very busy Drumba, she is doing the housekeeping of their house-case. Snaree also wants the place to be very clean he tries to make it brighter by scrubbing it with his drumsticks. Drumba is expecting guests: her family is coming, the Percussion family. Soon the brothers Tim and Tom will come along with the cousins Plate and Saucer, noisy and mischievous, who amuse themselves by hiding behind the little meloditties and scare them by making noise. After being their victim, Snaree joins them to make jokes until Drumba gets angry.