.Leo conducts to the cows, the cows then move, and they get the invitation for the butterfly. After they get the invitation for butterfly, the Little Einsteins make it to the festival in Mexico.
The Little Einsteins put their invitations in a box, so does butterfly and Rocket. The Little Einsteins and the swarm of butterflies make a music finale by singing the butterfly song. After they do, Leo calls out "Mission Completion!", then the curtains close the picture. They then do the Curtain Call before the film ends.

Little Einsteins (C) Douglas Wood and Disney.