Little Einsteins Season 1 Episode 28 The Missing Invitation Episode Title:The Missing Invitation.Episode Description:The team, with their friend Butterfly, sees that the other butterflies have an invitation to a migration party in Angangueo, Mexico. But then, their friend becomes sad because he did not get his invitation and three butterflies are teasing him. The mail carrier butterfly says that his invitation is in a mailbox but in the wrong place. Now, the team has to go to the four places to find his invitation on a mailbox: Niagara Falls, the United Nations in New York City, a big cave in Oklahoma and a field of cows in Houston, Texas.