In efforts to help Lara control her abilities, the Doctor turns to a previous companion, Gina, to help her learn to control her colossal side. While the two train, The Doctor and The Mistress meet and discover the reason that Lara was actually created, leading to the two keeping a huge secret from the Doctor's latest companion. The four also come across a universal station housing multiple beings from other areas of the universe, but are revealed to be controlled by the Vigil.