'Tis the season to get your geek on!Casey and Jim, along with some of their friends, travel to Vulcan, Ontario to attend the first annual Geek the Halls Christmas event, in hopes of getting some of the missing ornaments for their Star Trek Christmas tree. While there, some of the rarest ornaments goes missing, and it's a mad rush to find the valuable pieces before the police are brought in. With a hall filled with geeks of all types and genre, will Casey and her friends be able to find the missing ornaments? It's a Christmas Tree Mystery.