You the Doom Slayer, had just gotten back to Mars after going to Hell and retrieving the Crucible. Hayden freezes you and takes the Crucible before teleporting you to some place unknown. Well what if you were sent to a different universe?

Now after the long three decade war with the covenant was over the UNSC marine commander (y/n) and the whole crew of the UNSC prototype frigate Spirit of Hope are now stranded in unknown space after doing a emergency slip space jump to reach home until it glich. Now everyone will have to fight against dark creatures and propel with weird weapons and have magic how will it all turn out.