A summary slide in a presentation is not a slide that repeats your entire story. Repetition is boring, and unless you are preparing your audience for an exam, there is no need to force them to remember the precise content of your presentation. What you want them to do is take some action (invite you for the second meeting for example). The best punch you can give at the end is to repeat a key visual from somewhere inside the deck and keep it to that. The audience will connect to it and think of it in the context of all the other things you said before.