Harold Kelp, the grandson of Professor Julius Kelp, is a young inventor who struggles with his experiments. He is frequently attacked in his visions by his fear, which takes the form of a big, black monster. After encountering an angry mob involved in Harold's bad inventions, Harold is sent away to a science academy run by his grandfather.

References:
https://en.wikipedia.org/wiki/The_Nutty_Professor_(2008_film)