After running out of money mid-transport Catherine is abandoned on the rooftop of downtown mega-skyscraper: Peach Towers. She has no money, no friends, and no way to get to ground level. To make matters worse the place is swarming with chuds.

As luck would have it, she finds an abandoned building that hosts a dormant AI: IO. IO requires a partner to function and the two of them start up a rooftop bar. IO is obsessed with customer service and learns from what he sees.

As time goes on and IO sees what the customers really want, he begins Catherine on a training regimen. She has to decide to outsmart IO and escape the rooftop on her own terms, or become IO's perfect servant.

Every day Catherine works a shift at the bar serving drinks. Filling drinks just right grows the bar’s reputation. She can make shifts last longer and keep the customers around by making small talk, flirting, and more. The more aroused the customers get the more IO learns about human desires.

With a high enough reputation, she can unlock the waitress mini-game to bring in more credits and new customers. She has to balance the happiness of each table while avoiding spending too much time lingering with these new handsy customers.

Catherine lives atop a 200 floor mega-building. There is no elevator to the bottom floor. No transport ships land here anymore. At night mutant chuds come out and attack anyone wandering the streets unprotected.

The world is run by cynicism and greed. Every tower is its own miniature city. Landlords, fashion moguls, security cyborgs, and trigger-happy neighbors make up the rooftop. Everyone is out for themselves. Succum Brewery provides an oasis in the concrete jungle that can seduce even the harshest critics. 

Those on the frayed edges of society do occasionally help each other out... for the right price. With the profit made from the bar Catherine might just find help in all kinds of unexpected places.