The crew of the Derleth have been generous hosts. They've given Moriah, Bill, Gage, and the rest of the MacReady's crew several incredible gifts. They've solved problems humanity has grappled with for ages, shown us ways to power the entire world for generations. And they're offering even more. All they want is one teensy-weensy little favor in return from the MacReady's crew: open the hatch.