The Galactic Patrol's training ship Tiger Shark set off on a routine mission. Taking off from it's home planet, it intended to fly to the Moons of Troth, then round the planet Oronsay, finally returning to base via the abandoned space station at Way Point 3. It was a chance for the four space cadets aboard to prove that they could handle the ship on their own.

Gary, at 19 was the oldest and flight captain. Frank and Dave were both 18, and Billy was the baby. They were all tall, slim with latin good looks, all appeared younger than they actually were, and all were found sexually attractive by both men and women alike.

The flight was quite normal, until rounding the dark side of Oronsay they were attacked by an Arkadian cruiser that had appeared out of nowhere. Before the cadets had a chance to get their shields up or man the guns, their vessel was hit by a power bolt from the Arkadian warship. The bolt did not do any damage to the ship, only knocking out all four cadets.

The Arkadians were a humanoid race that had nearly become extinct when they started to experience trouble breeding. Their scientists found that by adding human DNA to Arkadian DNA the problem could be solved. This worked well for a time, however the scientists decided to enlarge their human gene pool by harvesting sperm from young, fit, humans like those on the Tiger Shark. A boarding party from the Arkadian ship went aboard the Patrol vessel and finding the crew still comatose, transferred them to their ship.

When the young cadets woke up, they found that they were naked and being held by an energy field. They all faced each other, their bodies tilted forward and bent at the waist, so that their little bums stood out in invitation. They soon realized that they couldn't move their feet, which were spread wide apart, or indeed any other part of their bodies.

They looked down and saw to their horror that their cocks were enclosed by a mechanism, which appeared to be a cross between an artificial pussy and the device farmers used to milk cows. Firstly the device injected a powerful aphrodisiac into the cadets, then the mechanism started up, fondling, and sucking on the cadet's erect cocks.

The frightened cadets all looked at each other's faces as the machines forced them, slowly but surely, towards orgasm. After they had cum, the device gave them ten minutes rest before starting again. Their ejected seed was fed down a tube to a central point, which all four tubes fed into. The trainee spacemen found that their ecstasy was tinged by shame by what they were being forced to do, but if they thought that was the end of their humiliation, they were very much mistaken.

When the Arkadians saw that the milking was going well, they decided to join in the fun. After all, they had been in space for ages and a nice, soft, youthful, human ass was just what the doctor ordered. They stood behind the bent over cadets and prepared to mount them.

The Arkadian cock is very different from the human variety, as it is made of pure muscle, which when inserted into a nice warm cavity starts to spasm, sending out sonic waves. This causes the person being shagged to experience enormous pleasure, like a thousand vibrators. Another advantage is that because the alien cock doesn't thrust, there