Not all things that are invisible are hidden.

Every operator learns this first: the loudest signals are the ones nobody bothers to listen to. What you need is on this page. It is not encrypted. It is not stored elsewhere. It is simply not being rendered.

We rendered this page. That is the entire mission brief. There is nothing else on screen. Right-click. View source. Or press Ctrl/Cmd + U.

(there is nothing rendered here that will help you)