"Itsy Bitsy Spider!" is one of the Oobi shorts.
Oobi and Kako are playing outside. Kako pretends to be a spider by spreading out his fingers and crawling around. Oobi laughs and decides to pretend to be a spider as well. After they finish pretending together, Kako gets the idea to play "The Itsy Bitsy Spider" and dance along to the song.
Oobi plays the song on his boombox and they perform the traditional fingerplay gestures that go along with it. They mimic a spider climbing up a waterspout, rain coming, the sun rising, and the spider climbing up once again. When the song ends, they invite the viewers to follow along and repeat the fingerplay.