Martha and Peck treck across the surface of the planet.
The group finds and activates the source and then Cobb kills Jenny while trying shoot the Doctor.
Donna, Jenny, and the Doctor are stopped by a laser wall which Jenny negotiates gymnastically.
Donna and the Doctor say goodbye to Martha.
Martha talks about the war with the Hath and examines the map.
Donna, Jenny, and the Doctor walk through the tunnels to the Human Base.
Donna, Martha, and the Doctor arrive in the war zone where Jenny is created.
Pickups of Martha and Donna in the Source room.