Simple iMovie Project

We have a variation of an iMovie, but it doesn't seem to be editable. We'd like it in an editable form. If it's not convertible, at least, you can see the desired sequencing. It's just a series of existing images, audio files, and a couple of editable text screens. Truly, less than an hour's work. We need the final results as an editable iMovie project file, not an mp4 or from Prime Pro or other software.