In this modern monster mash Dr. Frankenstein is a college professor who is conducting his unorthodox experiments. He makes the mistake of putting the brain of an evil guy into the monster and the monster wants to run things. Then, there's also a mummy that has been shipped to the college--and it reanimates and possesses another professor. The mummy wants the monster's body, since it's indestructible, and the two creatures fight. The special makeup effects are surprisingly good.
This is a fun movie that respects the monster mash-ups that came before it, particularly the Frankenstein/Dracula movies by Al Adamson and Paul Naschy. Recommended.