Your aim is to have at least one sim reach their lifetime wish.
Sounds simple? but there are fiendish rules which make this more of a challenge.

To Begin;

Story progression is turned on.
Auto population is turned off.

Lay down seven starter homes.
Fill those homes with randomly generated sims.
Each sim should be allocated* a different lifetime wish.

To play;

You will play the sims in rotation, each for one day only.
No two sims are allowed to keep the same job.
You may influence and direct sims in every way EXCEPT with romances.
If any sim moves in with their beloved, then on the next rotation, both those sims must be removed from their starter home.
That empty home will now be filled with a new sim, who should be given yet another unique lifetime wish.

The Challenge;

To complete at least one lifetime wish for one of your single sims.


Notes:

Lifetime wish allocation, by external random generator (hard), or choose from the game selection (easier). Remember the choice must be unique within the pool of all the sims you are playing (or have played)
You can start with an empty world and use the game as a build challenge, or begin with a populated world which has spare plots / starter homes (to move your romantic couples into).
Some lifetime wishes are impossible to fulfill in certain worlds, you can choose how to deal with this. Either build what you need, or reject those wishes at allocation time.
NRAAS story progression romance settings can be tuned to have faster and slower uptake times for new romances. Longer cool down times lead to a less manic game
As you are no longer playing your hitched up couples they may change track and choose new jobs which cause unplanned duplication of careers. You can ignore this

This is a fun way to try out lifetime wishes and jobs that you don't normally play.
You will like this challenge if you love a bit of chaos and shouting at your currently uncontrolled sims.
Keep an eye on the messages that pop up, and learn to shout 'no,no,no!' when sims pair up
If you run out of unique wishes or career paths, then play until your last single sim remains. If they die or get married then start all over again.

Good luck!