It seems that you have problems with two aspects: content and format (PowerPoint).
On the content - you could not present a business plan to potential investors simply because as it was already noted, it is too long to read. In any medium sized or big company, the higher the level in the herarchy, the shorter the document (that's why you have Executive Summary). If you want to capture the attention, follow the advice on Internet with regard to the content for a pitch deck. And invest only in a good deck; you may never come to preparing a full business plan.
On the format: Power Point is the used format for one reason - in introduces discipline and order. More or less, you have to deliver one message on each slide, and support this message with some data / considerations. And if you want to rpesent everything on, let's say 15 slides, it may become really challenging. Understanding what is important for your business, and what are the levels below it that support it, is the main benefit from using Power point. It requires you to think and to decide. There are Annexes for details, and almost never people get to them if the rest is will prepared. Nothing compared with the unlimited length of a Word document. I have been in consulting more than 20 years with some of the top strategy consulting companies, and I do not think we have prepared one plan / strategy / document for the board of directors in Word (or for any type of client). If somebody wants to prepare a Word business plan for you, most probably he/she has no idea what it is about.