The enemy was encoding secret messages in plant DNA, so they “captured” a greenhouse.
The first decoded messages were recipes for various dishes.
It was slow going: the greenhouse only grew savory herbs.
The Leader asked, “Have you found anything good, yet?”
The lab tech said, “Only thyme will tell.”
Computers pre-programmed to slingshot around the Sun to reach relativistic speeds, his journey seems to take only months, while decades elapse on Earth. His destination: the closest Earth-like extra-solar planet. After five subjective months, his ship wakes him.
Destination reached! It looks like…
Earth?
Buggy software leads to pointless round-trip.