Jimmy Neutron vs. Jimmy Negatron

The beginning of the game takes place in a museum in Retroville. Jimmy decides to build a time machine to impress Cindy. He sets the travel time to 50 years in the past. When Jimmy decides to activate the time machine with him and Goddard inside, they are instead teleported into cages in the lair of Jimmy Negatron. Jimmy Negatron is an evil version of Neutron from another dimension. Negatron plans on taking over Retroville and Jimmy must stop him. (imdb)