The Mystery of Phineas and Ferb

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

Plot
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.

Trivia

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