Carter, Daniel and Alisana have been in Carter's lab trying to figure out what the drawings and numbers mean in Calius' journal, scanning and inputting the information in to the mainframe they've discovered that it is both a frequency and a signal, Carter believes that they must transmit the signal on the specific frequency.
The frequency however is quite complex, they attempted to produce and broadcast the signal using Earth based equipment but it failed, with all the signals flowing around the world from radios, TVs and wireless, there would probably be too much interference anyway, so they concluded that they would require more powerful equipment and they've enlisted to the help of the Daedalus which is now in orbit and they're currently finishing up making the necessary modifications to it's transmitters.
SG-1 are on the bridge of the Daedalus.
"How long is this going to take?. We've been here for hours." says Mitchell.
Carter is sitting at a bridge console inputting data, "Nearly got it." she replies.
"So how have you been?" says O'Neill, sitting on the floor next to Colonel Caldwell's chair.
"Not bad Sir, you?" replies Caldwell.
"Oh I can't complain." says O'Neill, "Well I could...but...you know." he adds.
"Yes Sir." says Caldwell, with a slight grin.
"Carter, do the words, Frozen and Ass mean anything to you?" shouts O'Neill.
Carter smiles, "I'm finished Sir." she says.
"Thank God." says O'Neill, who groans a little as he uses the headrest of Caldwell's chair to pull himself up, "You should get some underfloor heating put in here." he says to Caldwell.
"I'll put in a request next time we're at the alpha site, Sir." replies Caldwell.
The necessary modifications have been made to the Daedalus' transmitter array and Carter has finished setting up the system and inputting the frequency and signal data, "We're ready to start transmitting." says Carter.
"Go ahead." says O'Neill.
"Sending the signal...now." says Carter, activating the transmitter.
The signal can be heard through the Daedalus coms, its a series of low and high pitch beeps of various lengths, Carter is monitoring the transmitter and looking for any activity on the receivers and scanners, the rest of SG-1 are standing near the bridge viewing window looking out at Earth, nothing appears to be happening.
Caldwell leans over in his chair, "What exactly are we looking for?" he asks.
"I have no idea." says Carter.
Daniel walks back towards Carter, "Anything?" he asks.
Carter shakes her head, "Nothing." she says, "The signal needs to break through a lot of interference, maybe we need to get closer." she adds.
"Sgt move us in as close as you can." orders Caldwell to a Sgt at the flight controls, "Yes Sir." replies the Sgt.
The Daedalus has moved towards Earth as close as possible but after several minutes they still haven't received or detected anything out of the ordinary.
"I'm sorry Daniel, still nothing." says Carter, a little disappointed.
O'Neill and others start walking back away from the window, "Well we gave it a shot." says O'Neill.
"Maybe the Ancients did move it." says Vala, "Yeah a lot would have happened since that Calius guy wrote that journal." says Mitchell.
"Alright, lets get back to the SGC." says O'Neill, "Caldwell can you beam us down." he adds.
"Are we giving up?" asks Carter.
O'Neill briefly points at the window, "There's nothing there, Carter. When we get back to the SGC you can go through the journal again...maybe we missed something." he says.
Daniel walks back towards the window and looks out, "I was so sure it was here." he says.
"Well we know it's out there somewhere, we'll keep looking." says Mitchell, putting his hand on Daniel's shoulder.
"OK, come on guys." says O'Neill.
"No wait." says Alisana, standing next to Carter and leaning on the console, "Sam, can you reverse the signal?" she asks.
"Why?" replies Carter.
"Just play it in reverse." says Alisana.
Carter reverses the signal, "Okay" she says, "Doesn't sound much different." she adds.
"Yes it does, slow it down a little." replies Alisana.
"Alisana, what are you.." says O'Neill, who's interrupted by Alisana, "Shush" she says.
"A little more." says Alisana, Carter continues to gradually slow down the signal being played in reverse and it starts to sound familiar to Alisana.
"Stop, stop. That's it." says Alisana.
Daniel approaches, "That's...what?" he asks.
"When I was little my parents would put me to bed and tell me the story of the people who came here from a far away land riding a silver star, the Lantis. After telling me the story they would hum a soothing tune to help me fall asleep...the is the tune." says Alisana, with a smile.
Carter turns and looks at O'Neill, they don't say anything, but in all their years of working together they've got to know each other so well that they don't need too, O'Neill knows exactly what she's thinking and he gives her a nod.
"Transmitting the signal now." says Carter, as she faces the console.
Less than a minute after the signal is rebroadcast, Daedalus' scanners pick something up on sensors, which start beeping.
"I don't believe it." says Carter, looking at her screen, "It worked." she adds.
"Find something?" asks O'Neill.
Carter brings up a live image of the area where the scanners are indicating, "There's definitely something there." she says, she activates thermal imaging and they see a heat signature gradually getting hotter and coming from an object under the surface, not just the surface but under the ocean as well.
"Is that it?" asks O'Neill, "Where is that?" he asks.
"It's in the North Pacific. About 500 miles North East of Honolulu." replies Carter, "That has to be it, whatever that is it wasn't there a few moments ago" she adds.
"What's it doing under there?" asks Mitchell.
"Well that's Hawaii, that area was highly volcanic about 30 million years ago, there could have been an island there when the Ancients came here and it could have sank, broken up and it's highly possible that the ship was covered in tonnes of rock and lava flows due to volcanic eruptions." says Carter.
"So...how do we get down there?" asks O'Neill.
"We beam down." says Daniel.
Caldwell stands up and walks over, "Wait a second, that things under hundreds of feet of ocean and rock, we can't scan its interior and we certainly can't see it, where exactly am I suppose to beam you too?." he says.
"Well we at least know the shape of it...from above." says Alisana, "Who's up for a gamble?" she adds.
"I'm up for it." says Carter.
"Up for what?" asks a confused O'Neill.
"Sir, based on the scan of the ship that we have, we could take a guess at the layout and try to beam on to the bridge." says Carter.
They spend a lot of time thinking about it and arguing about it, Carter thinks it will work and it's their only chance of getting on the ship, they could wait and bring in an underwater excavation team but judging by how deep the ship is it could take months or even years they reach it, beaming in is the only way.
Alisana and Carter have picked a part of the ship they believe to be the bridge, SG-1 are gathered near the window on the Daedalus' bridge, because the Lantis is so far underground their radios and locator beacons won't work, so they're taking along some booster rods to amplify their signal when they're ready to beam out, and they're also taking a Naquadah generator in case they need the power.
O'Neill turns to Carter, "You're sure about this?" he asks, a little nervous.
"Oh absolutely Sir. Well...70% sure." replies Carter.
"Only 70%?" asks O'Neill.
"Well there is a slight chance that we could...end up beaming in to a solid wall." says Carter.
"Come on lets go already." says Alisana with excitement, bashing O'Neill on the arm.
"Keep your pants on. Caldwell...hopefully we'll see you soon." says O'Neill.
"Good luck all of you, we'll be monitoring." replies Caldwell, he then turns his head and gives the signal to beam SG-1 down to the ship.
SG-1 appear at the coordinates they chose, they all fall unexpectedly about 5 feet to the ground and land pretty hard, they had the wind knocked out of them and a few bumps on their arms and legs but nothing serious, "Ooaar, great job on the coordinates Carter." says O'Neill.
"Thanks." replies Carter.
"I was kidding." says O'Neill.
"I know Sir." replies Carter, "At least we didn't end up inside a wall." she adds.
"Yeah..there's that." says O'Neill, "Where are we." he says.
They're standing in darkness, as they turn on their torches they see metallic walls, it's narrow so it must be a corridor and not the bridge as they were expecting, as they shine their light around they can see that one side of the corridor is completely blocked off by steal beams and piles of rubble, that part of the ceiling must have collapsed due to the weight of the surface and ocean above.
"Well we're not going that way." says Mitchell.
"This way appears to be clear." says Teal'c, shining his torch down the other end of the corridor.
O'Neill gets on the radio, "Daedalus this is O'Neill, come in." he says, "Caldwell, do you read?" he says.
"Its not going to work Sir, we're too far underground." says Carter
"Right." says O'Neill, he looks around, "So where to?" he asks.
"We should try and find the main systems, see if we can get some power." says Carter.
"Well lets do that. Mitchell, Teal'c take point, the rest of you stay behind us." says O'Neill.
So they all head off slowly walking down the corridor with only the light from their torches to see where they're going, apart from the collapsed ceiling behind them, the ship so far looks in great condition, shiny clean walls, floors and ceiling, they can see light panels on the walls above them but they're no use until they have power.