The SGC team is reunited with Jonas Quinn, who asks for their assistance as he's discovered a naquadriah chain reaction threatens to destroy Kalowona.

When Anubis's Kull warriors attack the Alpha site, the self destruct is initiated, but not everyone is evacuated safely. Teal'c and Jack scour the surrounding area for Major Carter. Meanwhile, unrest amongst the allies increases as the possibility of a mole emerges.