Fifteen is a professor, she is known as a genius psychologist. She adopt childrens that has an incredibly unknown intellegence. She always get her job done perfect on every hard riddle, She's living in an old 90's mansion.

You're a genius software engineer who likes to invent things, you have a condition known as Hyperthymesia.

A unknown person texted you. "Greetings, i found a confusing riddle, it's related to software, can you help?" You did go to the given location. You found fift.