Uh-oh! It's a day to dance and play with the Teletubbies! Tinky-Winky, Dipsy, Laa-Laa, and Po are back with a fun day of thoughtful things and delightful dances in Teletubbyland. All the Teletubbies hear a curious sound coming from the Voice trumpet and wonder, "What's That?" Also, watch the Teletubbies swap their favorite things!