Garth and Bev - Telephone

Animation about a time-travelling brother and sister called Garth and Bev, who live in harmony with nature in their village long ago. They are transported to different times and places by the Time Spiral and solve problems with the help of Grandfather Lir. Something is breaking all the pots in Hoyt's hut and the potter is convinced goblins are to blame. Garth and Bev must solve the mystery and put Hoyt's mind at rest. Goblins indeed! The answer comes straight from above - it's the vibrations from thunderclaps that are knocking Hoyt's pots over. Grandfather Lir sends the children to meet Alexander Graham Bell, who figured out sound vibrations can be used for quite a different purpose...