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British stage and screen favorite Stanley Lupino (Ida's dad) wrote and starred in this relentlessly upbeat musical comedy. Lupino portrays a struggling writer who is mistaken for a millionaire. The producers of a threadbare musical revue approach Lupino in hopes that he'll finance their show. Lupino sees an opportunity to help his own career, thus he maneuvers about to raise the necessary funding--all the while maintaining the illusion that he's a man of untold wealth. Cheer Up costars comic actor Roddy Hughes as a burlesqued matinee idol named Dirk Dirk, while popular film star Sally Grayalso shows up....playing popular film star Sally Gray.