Watch Bombuj. Silliness and surprise twists abound in the half-hour special, in which Elmo teams up with Abby Cadabby via video chat for a virtual scavenger hunt. Aided by Sesame Street friends Big Bird, Grover, Rosita, Oscar the Grouch, Bert and Ernie, Elmo's dad Louie, and tiger Mr. Stripey, the duo invites children to join in the search for all seven items on their list...along the way, "Monster Foodies" Cookie Monster and Gonger whip up a tasty summer dessert, Amy Sedaris shares an easy craft the whole family can make, and Gabrielle Union leads Elmo and Abby in a sweet sing-along.