JANEWAY: Report.
CHAKOTAY: Some sort of spatial rift. It opened right in front of us.
JANEWAY: Analysis.
KIM: It's a distortion in the space-time continuum, but it's got a graviton matrix. It's being artificially generated.
CHAKOTAY: By whom?
KIM: Sensors can't get inside. The distortion field's fluctuating. Something's coming out.
TUVOK: It appears to be a small ship, approximately six metres in length.
JANEWAY: Magnify.
TUVOK: Sensors are reading one occupant - human. He is holding position at the perimeter of the rift.
KIM: There's a subspace signature emanating from the ship. Captain, it's Federation!
JANEWAY: Hail them.
TUVOK: No response. They appear to be charging weapons.
CHAKOTAY: Shields up! Hail them again.
TUVOK: Shields are down.
JANEWAY: Get us out of here.
PARIS: Helm control is off line.
KIM: He's firing some kind of sub-atomic disruptor.
JANEWAY: Return fire.
TUVOK: Full phasers. No effect.
KIM: Voyager's molecular structure is coming apart!
CHAKOTAY: Tuvok, divert all available power to the deflector. Send out a high energy polaron pulse. Might help to disrupt his weapon.
TUVOK: Emitting deflector pulse now.
KIM: It's working.
TUVOK: We are being hailed.
JANEWAY: On screen.
BRAXTON [on viewscreen]: Starship Voyager, I'm Captain Braxton of the Federation Timeship Aeon. I've come from twenty-ninth century Earth, five hundred years into your future. Please disengage your deflector pulse.
JANEWAY: Why are you firing at us?
BRAXTON [on viewscreen]: Your vessel is responsible for a disaster in my century. A temporal explosion that will destroy all Earth's solar system. I've come back in time to prevent that occurrence. My mission is your destruction. You must not resist.
JANEWAY: I'm going to need some more information before I allow
BRAXTON [on viewscreen]: Debris from your secondary hull was found in the explosion.
JANEWAY: Captain, I simply
BRAXTON [on viewscreen]: No time!
TUVOK: He's remodulating the sub-atomic disruptor. Our deflector is losing power, it won't hold much longer.
CHAKOTAY: Captain, if he's telling the truth.
JANEWAY: I won't sacrifice this crew based on a ten second conversation! I need proof.
CHAKOTAY: It doesn't look like we're going to get it.
JANEWAY: Adjust our deflector to try and match the frequency of his weapon. Try to overload his emitter.
TUVOK: It seems to be working. His weapon is offline and his ship has been damaged. The rift is destabilising and he's being pulled back inside.
JANEWAY: Re-establish helm control!
PARIS: I'm trying, Captain, but we seem to be caught in some kind of graviton distortion. We're being pulled in too.
JANEWAY: Status.
TUVOK: Primary systems are coming back on-line. The weapons array and power grid took heavy damage.
KIM: The temporal rift is closed.
CHAKOTAY: Where are we?
PARIS: Home.