The Omega Men are currently on Changralyn, Broot's home planet, to return Kalista to her father in exchange for a cube of chocolate. Unless it's a valuable artifact or a key or a puzzle cube. The people on Broot's home planet hate him as much as the Jewish people hated Jesus. That'll happen when you're brutally honest with people's beliefs. They get all bent out of shape and call you arrogant and get pissed at you for climbing up in the pulpit and interrupting the priest's sermon by pointing out how God doesn't actually exist and they throw you out of church and call the police to arrest you for trespassing. Totally unfair.
The cube of chocolate holds within it the Key of Alpha. It's the key to salvation! It's a magic key that allows the bearer a free pass into heaven no matter how many sins they've committed. It's also, apparently, a sham. Hidden inside an unbreakable piece of chocolate, it gives believers something to believe in. It allows them to masturbate frequently while still believing that someday before they die, they'll break that piece of chocolate, take the key, and walk right into heaven with their dicks in their hands! When Omega sees that key, all he'll be able to do is roll his eyes because he'll also see the Key of Alpha dangling from a Prince Albert. Boom! In your face, eternal justice!
Oh, sorry! The chocolate was just payment to attempt the breaking of the stone! The Omega Men couldn't afford the price so they kidnapped Kalista to get her dad to pay it. I totally knew what was going on the whole time like a reasonably intelligent person!
Broot finally falls to his hands and knees, defeated. But his dad, the Pontifex of Changralyn, decides he proved himself enough to get his old name back and to be forgiven and to be welcomed back home. It sounds like that was part of the deal to trap the Omega Men in the temple. Sort of how Lando Calrissian sold Han Solo to the Empire in exchange for keeping his city. It seems to me that deal didn't work out so well for Lando. I bet the Pontifex winds up fucked too!
Time for the bomb to do its duty!
Which, you know, he totally does. He gives the rock one last smash and discovers the key. It's a little squashed version of the Jesus fish. Or the letter "R". Or an Egyptian eyeball. Whatever it is exactly, The Pontifex wants it! It proves everything! Or something. I don't know. I doubt it's worth much to the Pontifex when all the other people in the temple saw Broot uncover it. Although with all of his newly bribed treasure, he can have them all killed!
Broot tosses the Key of Alpha and Tigorr tosses Scrapps so that she can catch it and break through a window and escape the temple. The rest of the Omega Men are all about to die and Scrapps herself might not survive the fall. It looks like the omega for the freedom fighters! I mean terrorists!