Gravity Falls The Movie Fanfic: Across the Second Dimensionis a fanfic inspired by Phineas and Ferb The Movie: Across the Second Dimension.=== In the fic, Old Man McGucket has invented a machine that allows the user to go trought dimensions, and it's up to Waddles(as Agent W) to stop him. However, Mabel and Everybody else soon get involved and it's up to Waddles, Mabel, Dipper and everybody else to escape the second dimension alive. The fic is available at