Frankenstein (Gene Wilder)’s Timeline and Summary

After Frederick is done insisting he's a "Fronkensteen" not a "Frankenstein," he inherits the Frankenstein family castle and jets… er, trains off to Transylvania.
He meets Inga, Igor, and Frau Blucher (whinny) at the castle.
Creepy violin music leads him to his grandfather's laboratory… and his destiny.
Finding his infamous grandfather's personal journals, he becomes obsessed with the possibility of reanimation.
With Igor's help, he digs up a corpse and sticks a new brain in it. Add a bit of lightning and it's alive, it's alive!
It's also crazy. Igor accidentally provided an abnormal brain, and the monster almost kills the doctor.
They restrain the monster while Frederick distracts Inspector Kemp, assuring him there is absolutely no monster-making going at the castle, no siree.
Frederick teaches the monster to sing and dance, and they perform "Puttin' on the Ritz," but the monster gets scared and is captured by the police.
Back at the castle, Frederick and Inga have a roll in ze hay… well, the laboratory to be specific, just as Frederick's fiancée Elizabeth shows up.
The monster kidnaps Elizabeth, so Frederick has to play the violin again to get him back.
When the monster returns, Frederick performs a transference procedure to give the monster a more normal human mind.
Frederick survives the procedure, inherits the monster's behavior and schwanstucker, and marries Inga instead of Elizabeth. The end.