Archer and Hoshi stand before the Xindi Council as T'Pol and Reed lead a team into the heart of a Sphere.

Randy Oglesby (Degra)
Tucker Smallwood (Xindi-Primate)
Rick Worthy (Xindi-Arboreal Janaar)
Scott MacDonald (Xindi-Reptilian Commander Dolim)
Josette DiCarlo (Sphere-Builder Woman)
Sean McGowan (Corporal Hawkins)
Bruce Thomas (Xindi-Reptilian Soldier)
Andrew Borba (Xindi-Reptilian Lieutenant)
Mary Mara (Sphere-Builder Presage)
Ruth Williamson (Sphere-Builder Primary)

Eric Lemler (Helm Crewman)
Porthos

• The Xindi revere the Sphere Builders, calling them "The Guardians." When the Xindi homeworld was destroyed, the Guardians began to appear and brought them back together. They then gave the Xindi "proof" that humans would destroy their new homeworld in the future.
  
• The Guardians promise the Reptilians if they destroy the humans, they will become leaders of a new Xindi Empire.
  
• Reptilian Commander Dolim stabs Degra, killing him. The Reptilians and Insectoids hijaak the super-weapon and open a vortex for Earth. They kidnap Hoshi Sato before disappearing.
  
• MACO Corporal Hawkins is killed by the sphere's automated defense system.
  
• Council members Dolim and Janaar are finally named in this episode, but the Primate played by Tucker Smallwood is not.
  
• Tucker notes that Phlox has lost weight, and Phlox tells him the secret is a tapeworm in his intestine. (John Billingsley had lost weight in real life.)
  
• The stardate is not given, but is inferred by the next epsiode.