Receiving a surprising cry for help from the Klingon Empire, Captain Kirk learns that an alien civilization once owned the section of space belonging to the Klingons, Romulans and Federation, and has come back to reclaim it.
The Furies have returned in mighty warships even more powerful than before. But their weapons are more than merely physical, for these aliens have found a way to project fear directly into the minds of their enemies.
The Federation is threatened by an ancient mystery when a battered and broken version of the Defiant is found, frozen for five thousand years. Only the wormhole holds the answer and the future of the Federation itself may depend on the secrets it conceals.
Far from the Federation's desperate war against the invading Furies, the crew of the USS Voyager encounters something they never expected to hear again: a Starfleet distress call. The signal leads them to the source of the terrible invasion threatening the entire Alpha Quadrant.