

Tasha, Uniqua and Austin work for W-I-O-WA News (The Corniest Station in the Nation), which is a news station that usually ends up reporting on corn. Tyrone and Pablo are corn farmers who are so happy with their crop, that they keep sending in reports just to get on the air, but unfortunately it isn't considered newsworthy. They decide to make up some stories about aliens visiting their cornfields so that the news team will come out to investigate further and put their corn crops on their air.
When the Backyardigans receive a strange signal originating from Mars, Uniqua, Pablo and Austin blast off to investigate. They're backed up by Tyrone and Tasha, who remain on Earth to assist at Mission Control. The Backyardigans leave prepared for anything, but encounter some surprises along the way. They don't give up, however, and eventually make a surprising discovery regarding the source of the signal.
Pie makers Tyrone and Austin must make a pie for Empress Tasha, while protecting it from Ninjas Uniqua and Pablo.