My Future Is Unlimited

we all know the story of the wicked but
what if elphaba has a child with fiyero and born eleazar thropp. When he was 15 years old he visit the town of oz while wondering he meet g(a)linda daughter's princess grace uppland. After 3 years pass he study in shiz university and met her again , oh then being a drommates also.

What if grace will know his mother is the wicked witch?
is he going to fall inlove with grace?
Will he be going to fall also with grace?
Is there will be a happy ending?

all of the characters are not mine (except eleazar and grace and others i add), it all stephen schwartz characters