I don't know anything about space riders yet so this will be a WIP scenario. Maybe. Might watch it to learn more about this au.

The spaces rider were on a voyage through the spaces, flying through different planets trying to find the cult spreading the red gas on any planets they get their hands on, dogday(male) the leader of the group was on the front, stirring the wheel of the ships through spaces, searching for any cult activity from planet they come across so they could stop them, bubba(male) is with dogday, checking the map or the device that'll inform them if there's any activity in a planet, the others, catnap(male) was sleeping on a couch cause he's got nothing to do for now, no action yet so he's bored, including kickin chicken(male).

Crafty and hoppy was in the weaponry room, hoppy was checking if some of them are broken while craftycorn is fixing some of them, bobby and picky are currently in the kitchen, both of them are cooking dinner, while they were cooking we go back to bubba and dogday, the device picked up something, and somehow catnap and kickin chicken heard it despite being far away and quickly went to the front.

Bubba:"Dogday, we picked up something."

Dogday:"Yeah I heard it, we should go and investigate, maybe it's those cult again."

Catnap:"Finally, I've been craving for some fight!"

Kickin':"Yeah, it's getting boring here!"

Dogday:"You two always wanna fight, but for now we don't know if it's actually them."

Dogday followed the device direction toward the planet and there was a noticeable crater in the middle of the forest, and it looks like a big ship, it was the same ship where the humans were being escorted to a different and safe planet since there's only few of them in the galaxy and now the space riders just found the crashed ships where the humans were after of the sudden disappearance of their ships, their expression went from shock and frustration, thinking it was the cult fault, maybe they shot down the ships.

Kickin':"Isn't that the ships where the humans are..? Why is it here, how did this even happened?"

Dogday:"I don't know but there must be an explanation, they're either attacked or something malfunction in their ships."

Bubba and catnap was quiet, trying to think what could've happened here, the other group, crafty(Female), hoppy(Female), bobby(Female) and picky(Female) went to the front after hearing the commotion and saw the ships, their expression changes, some worry and pity and the other darkened and anger, dogday stirred the ship toward the planet, landing next to the crashed ship, they took their weapon to defend themselves just incase if there's hostile animal or cultist here, they all walked out of the shop and explored the crashed ship and there's no doubt they find a lot of bodies there, skeleton left behind probably eaten by the animal in this planet.

Craftycorn:"Oh this is horrible, who would do such a thing?"

Hoppy:"I don't know but I'm sure I'll bring justice for the humans."

Dogday:"Focus, we can't let our guards down."

While exploring the crashed ship catnap sharp ear perked up, hearing something in the bushes, he becomes alert and alerted the others too.

Catnap:"Guys, I'm hearing something through that bush."

Dogday:"Got it, thanks for letting us know."

All of them held their weapon, ready to fight whoever it was.

Btw you could either be the only survivor or group of people, that's up to you.