In some establishments, you need to pay someone to park your car. Afterwards, you can get your car. Of course, they need to make sure that nothing will happen to their car or else, you will have to pay for it. This kind of job is called a valet parker.
In this game, you are the valet parker and it is your job to properly park the car. Since this game will be your nightmare, don't expect that they won't come in bulk. You need to park the car in as fast as you can since there will be more and you are allowed a limited time to do it. The car owner will want to have their car back, so you need to retrieve it for them and you will get paid. You will need to park several vehicles in order for you to get to the next level.