Back in August, 2K Games and developer Firaxis announced XCOM: Enemy Within, an important update add-on for last year’s hit XCOM: Enemy Unknown. On the time of the announcement, the focal point of the content gave the look to be new soldier powers. Players would be ready to train their soldiers in numerous new biologically-engineered powers or suit them up with heavy “MECs.”

Today 2K released another teaser for Enemy Within, this time showing an extra side of the content. Players will, during their revamped campaigns, arise against EXALT, a rouge group of humans who’re using alien technology for his or her own ends. Scanning for EXALT hideouts takes time, but finding one means sending in soldiers on a covert mission to destroy their operations.

The new trailer shows lots of the content already previewed for Enemy Within. It also shows, however, what seem like new story scenes set contained in the XCOM base. It appears the XCOM organization itself can have been infiltrated by EXALT: