Millennium Group offender profiler Frank Black investigates the abduction of a bus full of schoolchildren, requiring the help of fellow Group members Peter Watts and Lara Means as he tracks…

Cassandra mysteriously falls ill, sending SG-1 back to her home planet — where they uncover a dark Goa’uld secret.

Teal’c is infected with deadly venom from a giant insect, and begins a terrible transformation. When he escapes the S.G.C., SG-1 must find him before Colonel Maybourne does.