Tuisko is 29 years old and her sister Kirsi is 31. They both have a cozy house in northern Finland, somewhere between Rovaniemi and Muonio, by a lake. The two sisters are quite different; Tuisko is a very lively rally driver, while Kirsi is a more analytical computer scientist and programmer.

To earn some extra money and meet new people, they rent out a guest room through Airbnb.