With the free html export plugin that I mentioned earlier you export all the pages from InDesign. Then export all individual Animate CC pages as html. Add missing links, and you may have to fix InDesign's generated link function.
When everything is working, and all pages link up properly, use Cordova to convert to a working app for mobile, desktop, etc.
Although I have a feeling you might not have the technical skills (yet) to accomplish these steps (not meant in a bad way, of course). Which means you will have to read up on Cordova. Or perhaps as an alternative use Adobe PhoneGap to convert to an app for mobile.
The only way to combine html from InDesign and Animate CC in one app is to use a webview wrapper (Cordova, PhoneGap, etc.). That, or publish the pages as a live website. But you will still have to fix things, and use some basic HTML, CSS and Javascript to get it all working properly. No way around this.