From the back cover:
In a World of Savage Adventure
The Solar Exalted have returned to a world of turmoil and war. A great empire falters on the edge of ruin. Vast fortunes and great power await those who are able to reap the whirlwind, and death awaits those who cannot.
It is the Dawn of the Age of Sorrows
Taking characters from the farthest North to the uttermost West, from the slums of Nexus to the hidden reaches of Elsewhere, Time of Tumult offers three adventures full of exiled spirits, First Age wonders and the terrible secret of the banished Primordial Autochthon.