As a world builder I like to make solar systems and sometimes when I see an interesting idea I can’t help but wonder could that actually work that way? For an interesting example here is a clip from the movie Pandorum. https://www.youtube.com/watch?v=0xZm-hqIkQA
Now if you notice at the beginning the probe apparently passes by an icy moon similar to Europa, Enceladus, or Triton with those geysers. However, this icy moon Is orbiting an Earth-like habitable planet, that the end of the movie showed also had tropical beaches. Odd, but probably just another plot hole to add to the pile for that particular movie.
But then it happened again.
Now if by some cruel twist of fate you have not yet heard of the Sojourn go check it out, it is amazing with detailed world-building spectacular characters and a story that leaves you wanting more. First episode up on YouTube (https://www.youtube.com/watch?v=xlauJ06yqwc). But the relevance to this question regards the layout of one of the more important solar systems in this universe, shown here.
So you can’t help but notice the large innermost planet called Hadimus Which is described by their wiki as a hot ice giant. Now ice giants like Uranus and Neptune are characterized by being smaller than their gas giant cousins like Saturn and Jupiter and having a different makeup. While gas giants are essentially hydrogen all the way down, Neptune Uranus have some hydrogen but also have a mantle that is made of compressed slushy water and ammonia. But would it survive the heat?
Now before I dismissed these ideas as a little bit of fantasy, we should acknowledge that the universe can and has produced weirder stuff, such as Gliese 436 b a planet literally covered in flaming ice. (https://www.youtube.com/watch?v=b6g-bYB2Xmg). So the universe can sometimes seem specificity designed to futz with our heads.
Now with all that said the one thing I would like to know is: Would icy moons and giants be possible within an inner solar system?