One beautiful, and peaceful, little planet had a form of humanoid life that worshipped a colourful snail.
Like the snail, life was slow and peaceful.
That is, until Have a Nice Day made a low-level pass to collect samples of the atmosphere.

Many saw the 'flaming arrow' in the sky as a sign.
Various interpretations of the meaning of this sign gave birth to numerous different religions.

As with all good religions, the ongoing arguments turned to wars.
After a few hundred years of wars, the population was totally decimated.
The survivors got together and found that they had mutual, bad, feelings about religion.
The more intelligent felt that religion sucked.
It was an undisputed fact, however, that life was much better when they worshipped the snail.
If everyone returned to worshipping the snail, life might improve.
The last thing people would accept, however, was being dictated to about their religion.

Snail drawings started appearing overnight on walls and buildings.
A few snail miracles were manufactured.
An underground movement conveniently sprung up so that it could be banned.
This made it much more attractive and interesting.
Within a few years everyone had returned to worshipping the snail.
After this, the population grew again, the planet prospered and everyone lived happily ever after.

Thereafter, however, anything which appeared in the sky, like the 'flaming arrow', was regarded as bad.
Future space visitors would not be able to understand why they were pelted with rotten fruit, and other not so nice things, when they landed on this planet.

Have a Nice Day returned with three possibilities from the 37 it had surveyed.
The atmospheric samples of two were found to contain unfriendly spores or viruses.
This left one planet to be inspected by a survey team.