Okay, I have three nights (not including tonight) to finish prep for Session 1 of my Star Wars Force & Destiny game for a bunch of crazy mates (some of whom will be having their first ongoing RPG experience with me).
Thanks to a couple of sessions of character and world building, the PCs have some interesting personal and local history for me to riff off.

We're doing an In Media Res start. The players, who jointly possess a YT-1300 freighter, are in the midst of the Mezzren Thread, a race through an asteroid belt; he players likely need the money to upgrade their ship, finance expeditions to discover instructions for building lightsabres (ahem) secrets of the Force and buy a droid or two (one player already asked).

As the session commences, they have to disembark in order to move their ship along a conveyor belt as quickly as possible by completing a series of challenges whilst being harassed (and possibly fired upon) by the crew of another ship doing the same thing. There are three gated sections on the walkway they own, each with its own pair of consoles that do something funky (speed the conveyor up, slow the other conveyor down, administer some shocks, swing a big smelting pot at the opponent's ship, unleash a battle droid, lock the gate to the next section for a turn), and the last one, which grants them access to a rail car that gets them to the end of the conveyor and retrieve their ship, requires the team to swap a key with the other crew.

(Said other crew are a bounty hunting gang that one of the PCs used to lead. They don't like him much.)

After that, they hit the choice. In this asteroid belt is a gravitic anomaly that only forms once a year (at the same time as the race). Some info collected by a recently-vanished archaeologist (named Henday Anorr; we make no apologies) indicates it may be a hyperspace corridor to the fabled birthplace of the Jedi order, the planet Ossus.
(It's not.)
When they approach, they will notice another vessel heading for the anomaly. It's full of freed slaves (a hot button issue for one PC, who's a freed slave herself) who are trying to make a run for the corridor. I think some local authority should be in pursuit for the chance at a quick starship battle.

So: Do the players decide to take their shot at the corridor too?

If yes:

The players discover at the other end of the corridor not Ossus, but an ice planet - one where the ice has either frozen over some sort of ancient city (or the city was built into the ice). I'm thinking it's Star Wars-grade high-tech, but somehow imbued with the Force, so much so that the only way in is to Use The Force somehow.

The players have one or two of the following powers each: Enhance (boost athletic abilities), Foresee (get vague hints about the next 24 hours), Heal/Harm (per the label), Influence (cause mental strain), Move (pick small stuff up and shift it) and Sense (feel the presence of nearby living creatures).

I'm thinking that they need to open some sort of locking mechanism with the Force, that the gate is hollow and occupied by small arctic creatures and that the locking mechanism maybe needs to be moved without harming them (combining Move and Sense) - it will still work if they do, just maybe set off some sort of alert or alarm within the city (I don't want to penalise them for going dark side, just keep things interesting).

Maybe Influence or Harm could be used to get the creatures to flee?

After they do, they have a chance to look around and Soak The Wonder In, and also realise there's a means to keep the corridor from closing for another year - if they don't they can leave, they just can't get abck in for 12 months.

Then another ship comes through the corridor - an Imperial corvette (or maybe just a pair of heavy shuttles), with another character from the brainstorming session at the helm: Captain Juclan Dracyp. The fact that Dracyp backwards spells Pycard is not at all a coincidence (once more, we apologise for naught); while he's played by Patrick Stewart, he's everything the captain of the Enterprise isn't. He knew about the Corridor and was using the players to allow him access to the City in Ice.

He'll let the PCs go (they're already a valuable asset to him, thanks to some earlier blackmail material) but he'll take the slaves into custody, and as for the City in the Ice, well, that's not the players' concern any more. Interesting choices, Conflict points earned, the necessary fight with a squad of Stormtroopers and some hopefully fluctuating Morality at the end.

(An idea: Once they leave, they realise that certain markings on the walls of the City match the trophy for this year's Mezzren Thread. Can it open the Corridor at times other than its annual opening? What will happen if it's brought back to the City? New secrets of the Force? The unleashing of a new dreaded enemy?)

If not:
Well, then, there's the last leg of the race. Cue another starship battle as the players try to win and/or place. Ideally, the players do so and earn the money and the trophy (which may or may not give the player with the Foresee power a vision of the City in Ice) - and then someone - I'm thinking a rebel cell - tries to steal the prize money.

Someone suggested that part of the prize should be a starship, as one of the other players' temptations to leave the team would be owning their own vessel, and while we thought better of dangling that in front of the player (who actually won't be there for the session), maybe having the Rebels steal the ship would be fun.

That, of course, is the perfect time for Capain Dracyp to show up and unleash some Stormtroopers. (I am itching for the chance to say, "Stop that ship! Blast them!") Maybe he even offers the players a deal to infiltrate the Rebels - he only sends enough Stormtroopers for things to look good.

Is there a meeting of the minds with the Rebels? Is there another, more serious fight if Dracyp manages to catch up?

Things I want/need to do:

Stat Dracyp out.
Finalise the Force challenge at the gate to the City in Ice.
Come up with some cool stuff that the players might get access to in the City in Ice.
Come up with some notes on the ship the Rebels could steal.
Work out a decent prize purse.
Come up with another racing team or two.

Is there anything I'm missing?