"The Origin of Species" is an episode of The Outer Limits television show. It was first broadcast on November 14, 1998, during the fourth season, and is a sequel to a previous episode, "Double Helix".

After lifting off into space, the rocket is seen heading through the cosmos. It's a very shaky ride inside a strange-looking ship. The students and Doctor Martin Nodel are all secure against a sort of upright wall. The ride stabilizes after they exit the atmosphere.

Soon after some questioning from the students, Doctor Nodel places his hand on a symbol, but he and his son Paul are absorbed into the ship. The confused students search for any trace of them after their disappearance. They try to remain calm and rational, but fear that the ship might attack the rest of them. They attempt to stay together, and talk among themselves, but decide to try to wait until the ship reaches its destination.

Suddenly, the ship rocks violently and it seems they're breaking apart, but actually the ship is reshaping into another form: a more aerodynamic craft. They are amazed at the changes, and are afraid of the possibilities, but decide to put their fears aside and split up to map out the ship to search for anything useful or possibly more information about the ship itself.

Hope, Paul's girlfriend, who stayed behind in the central room, is looking around. She reads through the doctor's report. Meanwhile, one of the student pairs is inspecting a corridor. The girl asks what the guy thinks the ship is made of, to which he responds some sort of metallic crystal. Comments are made that the ship feels more like a 'living thing'. Another group find a symbol that looks like the one that had been on the Doctor's hand.

Back in the central room, Hope is still reading the report. It reveals that Doctor Nodel had a genetic disease. On the last page is a diagram of the symbol, and a note about a dinner date. As she closes the book, she hears a voice coming from the machine into which Doctor Nodel and Paul had apparently been absorbed. Curious, she places her hand close to the machine and is zapped. It is then that a sort of holographic image of both the doctor and Paul (they alternate), trying to tell her to 'listen and prepare', appears then disappears.

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