They didn't ignore the source material, they took creative liberties
and by creative liberties, I mean they changed every single detail no matter how meagre in some small way for no apparent reason what so ever. Huge difference there xD
I lol'd so hard when the evil guy referred to the egg as a 'stone' in the opening scene... are the writers really so lazy they couldn't come up with a less artificial way of hiding the eggs egginess from the viewers? "Lol, want my stone now plzthnx" "We found your stone!" "Its an egg, I said it was an egg *coughs* remember?" "Oh yeah, right"