Athena is practicing her singing, so she awakes her grandfather Hoots. First he attempts to make her sing silently, however that did not prevent her from jumping around and interrupting him in his sleep that way. He then tells her that great singers have to sleep, and without sleep you can't sing.
Ernie tells Bert that he can't sleep because he is scared of monsters; not friendly monsters like the ones he knows, but scarier monsters who hide in the dark and go "Wubba, wubba." Bert tells Ernie to imagine some things that he is not afraid of (primarily balloons of different sizes), and the pair starts to sing "Imagination." (EKA: Folge 0411)