Phineas and Ferb the Movie: Across the 2nd Dimension

2011
Rated TBC by the BBFC

Synopsis

The stepbrothers discover their pet platypus is really a secret agent, and journey to another dimension inhabited by alternate versions of themselves. However, their arch-enemy Dr Doofenshmirtz in this universe is far more competent than the original and has succeeded in his evil ambitions. Animated adventure, with the voices of Vincent Martella and Thomas Brodie-Sangster.