Help me create a short film for school.

My video has to be about 15 minutes with editing. The theme is  love vrs hate
It has to be a child’s book.
I can’t think of a story can some of you help out?
Answer #1
original or existing story ?
Answer #2
It can be both, but I would like it to have some comedy in it so I wont bore them.
Answer #3
the ugly duckling ?