Do you mean Thesis or Theseus?
Please note that we don't do students' homework for them. Here are some links that may give you some ideas about Theseus -- note the spelling of his name.
You might consider writing about one of his feats of strength and skill in detail.
Once YOU have come up with an attempt on your own, please re-post and let us know what you think. Then someone here will be happy to comment on your thinking.