The thesis statement is the entire basis of a five paragraph essay. In your thesis statement, you will state exactly what you are going to prove in your essay. Then, your three body paragraphs support that thesis. Although I am not 100% sure what you are asking, I think that when you say you need "three theses," you mean that you need three possible thesis statements that you can choose from. If this is not what you mean, please repost your question. I will give you three different ideas that would be perfect for the thesis of a five paragraph essay. Each bullet point will begin with the thesis statement and continue with ideas for body paragraphs.
"Once upon a Time" can be compared to three movies that share its name. The body paragraphs would state a few similarities and/or differences between the book and the movie.
- The characters in "the bedtime story" try to secure the safety of the family by taking extreme measures. The body paragraphs would consist of how each character tries to secure the family's safety.
- The race riots occurring outside the suburb wreak havoc in the community. The body paragraphs should be about three different ways that pandemonium can be seen in the suburbs. One of the new ways is how the different family members begin to distrust their servants of a different color.
- The frame story makes a direct connection to the actual story of "Once upon a Time." The body paragraphs should talk about what the frame story is: the woman hearing a sound outside of her apartment and fearing that sound. The other body paragraphs should be about how that could possibly inspire the fear in the actual story in two different ways. Each way should be two other body paragraphs.
In conclusion, above you will find a few different ideas for an appropriate thesis statement. All of them would serve well as the main basis for your essay. Good luck!