Gravity Falls Fanfiction Wiki

The Mystery of Phineas and Ferb

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The Mystery of Phineas and Ferb is an upcoming Disney Channel original movie.


A new family moves into Gravity Falls for summer vacation called the Flynn-Fletcher family. Mabel thinks the family is awesome and tries to make friends with them while Dipper is alittle suspicious at all the strange facts about the family.


  • It is a crossover between Phineas and Ferb and Gravity Falls.

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