Meaning of “unfold” - Learner’s Dictionary

unfold

verb us uk /ʌnˈfəʊld/
DEVELOP [ I ]

If a situation or story unfolds, it develops or becomes known:

The nation watched on TV as the tragic events unfolded.
OPEN [ I, T ]

to become open and flat, or to make something become open and flat:

I unfolded the map.

(Definition of “unfold” from the Cambridge Learner’s Dictionary © Cambridge University Press)