TMDb/The Super Mario Galaxy Mo Movie Nintendo fans are divided! The new Mario Galaxy movie reveals a shocking twist: Princess Peach and Rosalina are sisters, changing Mario lore forever. April 7, 2026 AceShowbiz - The storyline across the decades of Mario games has always been somewhat vague, typically revolving around simple goals like rescuing Princess Peach or defeating a villain threatening the Mushroom Kingdom. Therefore, it's no shock that both The Super Mario Bros.