The park is miraculously sent into space.
A group of robots come to help the guys in the dome.
Benson retreats back to earth in an escape pod, but finds life on earth much more challenging.
Mordecai and Rigby want to buy some cool hover boots, but don't have enough space creds for them.
The guys need to retrieve a wallet on a hostile planet.
Muscle Man vows to prank someone.
The park crew helps Pops overcome his nightmares.
Mordecai and Rigby accidentally set loose a sinister brain.
When Benson is dumped by his girlfriend Pam, he goes on a quest for French Fries to fill the void left in his Heart.
Rigby must pass a safety test.
Mordecai and Rigby have to defend their case on a planet inhabited by ear people.
Mordecai and Rigby want to go to a reunion concert.
The guys race through space.
Mordecai and Rigby want to avoid spoilers of their favorite TV show.
The guys must escape a bad guy.
The guys get new beds.
Mordecai and Rigby enter a teleportation machine at the same time, causing unwanted effects that they hope to reverse before it's too late.
The gang find the Alpha Dome, the first dome ever sent to space. Inside, they find a bunch of people who believe it is 1690.
The guys gather in the house on the Dome and tell scary Halloween stories just like ol' times, only this Halloween, the stories have an extra terrifying, science fiction twist.
Pops finds a tape that contain answers to his questions.
The rest of the gang learn something about Pops.
The guys help Pops train.
The guys celebrate their first Christmas in space by opening presents, eating peppermint bark and telling Christmas stories. Benson wants the stories to be more Christmasy but the guys keep adding scary elements, which infuriate their boss.
Pops still doesn't wish to fight Anti-Pops and wants to peacefully work things out, but everyone else doubts kindness will stop Anti-Pops.
After the incident between Pops and Anti-Pops, the gang search out to find the Seer.
The gang try to support Pops for the imminent battle against Anti-Pops.
The crew arrive at Lolliland early, so they set up traps for Anti-Pops. Things seem to go off smoothly, but Anti-Pops is unfazed by their futile attempts.
Mordecai, Rigby and the gang help Pops in an epic final battle against Anti-Pops that will determine the fate of the universe.
Watch Regular Show Season 8, Episode 18: Alpha Dome online on FlixGems. The gang find the Alpha Dome, the first dome ever sent to space. Inside, they find a bunch of people who believe it is 1690.