In a narrative
what happens during the conclusion

Usually, in a conclusion, you wrap up what you have been writing about the whole time. So, a conclusion is basically a summary of the whole text. You can introduce new ideas for the reader, but it is usually inadvisable. In a couple of sentences, you should finish your text, referring to the previous paragraphs and just wrap it all up nicely.

My favourite season is summer.because we can go to beach, wear summer clothes (that are way better than winter