Phineas and Ferb (2007)
S1E47 Unfair Science Fair Redux (Another Story)
Episode Overview
Feeling abandoned and unwanted, Candace rushes through Baljeet's portal to Mars, where she is unexpectedly celebrated by the Martians. Back on Earth, Perry joins Dr. Doofenshmirtz in constructing his latest evil invention, but their progress yields results that are less than ideal.
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S1