IDK, 'pests' pun I guess.

I forgot to come back and check this, but I know what happened in the episod, I get the ending and the twist and love it! I'm just completely baffled by the title, Tempests. Like is the pun pests? Or is tempest supposed to be a play on words as in they're TEMPTED to believe a false reality?

For everyone else;
This is the one where a spaceship that was carrying a cure for a virus crashes on a small moon and one of the humans (Will from
'Will and Grace'
) is bitten by a space spider.
He hallucinates two realities; one where they're still stuck on the moon, trying to get off and one where they escaped and made it to their colony. He can't tell which one is the real one.
It turns out
he never made it back inside the spaceship at the beginning and so both realities were fake.
You're welcome.

Kerbal Space Program:
Failure is not an option. It's a requirement!

Loved the twist ending!