Let's Be Friends

From the introduction: The characters are called into an emergency briefing – several members of SG-25 have gone AWOL a few days after returning from P4X-932-C, a world orbiting a red giant star. While military police and SGC security teams attempt to track down the missing people on Earth, the PCs are asked to go to P4X-932-C and see if they can figure out what might have caused SG-25 to vanish.