While fishing about space, Small Clanger catches a floating teapot in his music boat. Having never seen a teapot, the Clangers attempt to discover the peculiar object's purpose. Small Clanger proposes it to be a soup jug to carry their soup from the soup wells, so he puts his idea to the test.

After filling up the pot with delightfully delicious green soup, Small Clanger takes it back to the house. Out of curiosity, he decides to blow through the spout of the pot, spraying soup out of the top, making a dreadful mess. Taking the noisy, messy teapot out of the house, Small and Tiny blow through the spout making it sound more like a trumpet than a teapot, and in return something calls back.

All of a sudden, metal teapots and pans start raining down on the Clanger planet. To get rid of these noisy intruders, Tiny uses notes from a music tree to build a helicopter, and she attaches it to the teapot. Floating up into space the others follow up in suit leaving the Clangers' planet peaceful.