First, see here.
problem is how to disrupt and rule history without being stopped by
extratemporal counterintervention. To get help, he travels in his TARDIS
and rescues Merau Varagan, Raor and some Neldorian thugs from the exile
planet. Seeking military intelligence, the Three (The Master and the
two Exaltationists), helped by the Neldorians, abduct Manson Everard
from his New York apartment, the Doctor from UNIT HQ and Captain Jack from Torchwood.
Time Traveler has redesigned his Time Machine so that it can travel in
any direction of space or time as originally intended. He spies on UNIT
by traveling through its space-time in order to learn about the
mysterious time traveler called the Doctor. Thus, he witnesses the
appearance of the Master's TARDIS, the abduction of the Doctor and the
TARDIS's disappearance. Traveling back in time and forward in space, the
Time Traveler enters the TARDIS. He must now rescue the captives and
help them to overcome the Three. He can travel through the space and
time within the TARDIS as it travels through external space-time.