Kerberos. A moon of Pluto, just 7,500,036,660 miles from Earth. On the moon are four Astroexplorers, trying to recover something that might give humanity hints regarding a possible existence of extraterrestrial life. An icicle that's shaped like a perfect cylinder is being excavated.
"Easy, son." the commander of the mission says, "This ice is delicate."
"Amazing." the commander's son says as he's carefully removing the ice, "Isn't this exciting, guys?"
"It's amazing that we managed to get this far!" Zak said.
"You guys get a little more excited about ice samples than I do," Kai tells them.
"This is history in the making," the commander says, "Not only have we traveled farther than any human ever has, but this ice could hold microscopic clues about the existence of life outside Earth."
"Think of it, Dad," his son began, "We could use those clues to become the first people to meet aliens."
"My life's work would be complete," the commander said, before noticing the ground rumbling.
"What is that?" he asks, "Seismic activity?"
"Whatever it is, i don't think it's friendly" Zak replied.
"We should get back to the ship," Kai suggests.
Just then, a giant shadow covers them, and they turn to notice an alien warship coming for them.
'What?" the commander asks, "What is that?"
The ship continues to hover for them.
"It can't be!" the commander says in shock.
Kai notices something coming out of the ship's top, and tells the other two, "Run! Come on, run!"
Zak realized this as well and yells, "Come on! Let's get out of here!" He helps them.
They take them with him, leaving the ice behind. Unfortunately, a tractor beam emerges from the ship, sucking the four pilots in.
"Marshal Zorn," Kai and Zak heard a voice say, coming around, "We were scouting System X-9-Y as ordered when we found these primitive scientists. I don't think they know anything useful."
"Take them back to the main fleet for interrogation," the Marshal Zorn says through the open communication system, "The druids will find out what they know."
"Please," Kai calls to them, "We come from a peaceful planet!", Zak also calls out "We mean you no harm!", Kai also said "We're unarmed!"
They get knocked unconscious by one of the ship members. Kai later wakes up to find to find himself being taken with Zak, Mr. Tripp and his son by the guards to new prison cells.
"Look," a male voice says, "they brought in another one."
"Who is it?" a female voice says.
"Over there," the male voice says, "It's another one."
"Huh?" Kai says to himself, noticing all the cells. He gasps and learns that he has become a prisoner.